Dynamics of Atmospheres and Oceans最新文献

{"title":"Investigation of heat and mass transfer in an electromagnetically driven ionized tri-hybrid nanofluids flow over a convectively heated cylinder","authors":"Muhammad Naveed Khan ,&nbsp;Shafiq Ahmad ,&nbsp;Aamir Abbas Khan ,&nbsp;Mounirah Areshi ,&nbsp;Ibrahim E. Elseesy","doi":"10.1016/j.dynatmoce.2025.101635","DOIUrl":"10.1016/j.dynatmoce.2025.101635","url":null,"abstract":"<div><div>Nanofluids are employed in various heat transfer and cooling applications because of their enhanced thermal conductivity, making them useful for electronics cooling, solar collectors, and heat exchangers. The current study explores the behavior of a partially ionized Prandtl fluid with three types of nanoparticles as it flows through a convectively heated cylinder under magnetic influence. The purpose of dispersing three different nanoparticles <span><math><mrow><mfenced><mrow><mi>MWCNT</mi><mo>,</mo><mi>A</mi><msub><mrow><mi>l</mi></mrow><mrow><mn>2</mn></mrow></msub><msub><mrow><mi>O</mi></mrow><mrow><mn>3</mn></mrow></msub><mo>,</mo><mi>SiC</mi></mrow></mfenced></mrow></math></span> is to increase the functional fluid heat transfer rate. The study looks at how powerful produced magnetic and electric fields affect fluid flow under the supposition that the magnetic Reynolds number is very high. The study analyzes the mass and heat equations while taking into account factors like Joule heating, activation energy, varying thermal conductivity, and changing mass diffusivity. Additionally, the consequences of Joule heating, viscous dissipation, and thermal radiation are appraised when evaluating the disorder in the flow system through entropy generation. Based on these assumptions, differential equations were employed to create the mathematical model. The differential equations are then subjected to similarity variables to become a dimensionless variant of ordinary differential equations. The numerical scheme BVP4C on MATLAB has been used to find the numerical results. The comparison results are found for ternary nanofluid <span><math><mrow><mfenced><mrow><mi>MWCNT</mi><mo>,</mo><mi>A</mi><msub><mrow><mi>l</mi></mrow><mrow><mn>2</mn></mrow></msub><msub><mrow><mi>O</mi></mrow><mrow><mn>3</mn></mrow></msub><mo>,</mo><mi>SiC</mi></mrow></mfenced></mrow></math></span> and unary nanofluid <span><math><mrow><mfenced><mrow><mi>A</mi><msub><mrow><mi>l</mi></mrow><mrow><mn>2</mn></mrow></msub><msub><mrow><mi>O</mi></mrow><mrow><mn>3</mn></mrow></msub></mrow></mfenced></mrow></math></span> using graphs. It is observed from the figures that in enhancement in Prandtl first parameter, curvature parameter, Hall and ion slip effect, the fluid motion enhances while the reverse behavior is observed for Hartman number. The fluid temperature surges with stronger estimations of the Dufour number, variable thermal conductivity, and radiation parameter.</div></div>","PeriodicalId":50563,"journal":{"name":"Dynamics of Atmospheres and Oceans","volume":"113 ","pages":"Article 101635"},"PeriodicalIF":2.0,"publicationDate":"2025-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145840652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rainfall extremes variability, teleconnections with atmospheric circulation anomalies in the Indian summer monsoon","authors":"Anmol Yadav ,&nbsp;G.P. Singh ,&nbsp;Pradeep Kumar Rai ,&nbsp;Vijay Kumar Soni ,&nbsp;Akhilesh Mishra ,&nbsp;Sonu Kumar","doi":"10.1016/j.dynatmoce.2025.101636","DOIUrl":"10.1016/j.dynatmoce.2025.101636","url":null,"abstract":"<div><div>We investigate the spatiotemporal variability of Indian Summer Monsoon Rainfall (ISMR) and the anomalies in atmospheric circulation and oceanic conditions during June–September (JJAS) from 1981 to 2022. Using multiple data sources (like IMD, NOAA PSL and HadISST), Empirical orthogonal function (EOF), principal component (PCs) coefficient of variation (CV), precipitation concentration index (PCI), composite analysis of atmospheric and oceanic anomalies determines the variability for exploring extreme wet and dry years. Seasonal rainfall is highest over Northeast India and Western Ghats, while the decadal trend shows increased rainfall in July, August, and September. EOF analysis shows that first mode covers central and southern India, whereas the second mode exhibits a dipole pattern over the Gangetic plains and southern regions with 14.9 % and 9.1 % of the total variance. Eight extremely wet and six extremely dry years were also noted. In composite analysis, wherever extreme wet and dry years are found, these modes correspond to distinct Sea Surface Temperature (SST), Sea Level Pressure (SLP) and wind anomalies across oceanic regions. Wet years exhibit positive rainfall anomalies related with warm SST in Indian Ocean and cooler SST in the Niño 3.4 region, accompanied by low SLP anomalies and enhanced south-westerly wind. Dry years are characterized by cooler SST in the Indian Ocean, warmer Nino 3.4, SST, higher SLP, weak winds, and limited moisture transport, which contribute to the reduction in monsoon activity. These findings underscore the significant role of SST, SLP, wind, and vertical motion, vertically integrated moisture flux and soil moisture anomalies influencing ISMR patterns.</div></div>","PeriodicalId":50563,"journal":{"name":"Dynamics of Atmospheres and Oceans","volume":"113 ","pages":"Article 101636"},"PeriodicalIF":2.0,"publicationDate":"2025-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145840650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multidirectional swell dynamics in the Indian ocean during the austral autumn and coastal flooding implications for the southwest coast of India","authors":"P.S. Swathy Krishna ,&nbsp;M. Ramesh ,&nbsp;C.T. Tejavath ,&nbsp;N. Sreejith ,&nbsp;Vijay Kumar Vishnu ,&nbsp;L. Sheela Nair","doi":"10.1016/j.dynatmoce.2025.101634","DOIUrl":"10.1016/j.dynatmoce.2025.101634","url":null,"abstract":"<div><div>This study analyzes two significant swell events along the southwest coast of India during March and April of 2020, characterized by multi-directional swells originating from an extensive swell generation area spanning the Indian Atlantic Southern Ocean (IASO) interface to western Australia. The research reveals the critical role of Cut off Low (CoL) formations and Southern Ocean current systems in modulating storm propagation and enhancing swell impact. In this study, through sophisticated spectral analysis, we show the presence of diverse long-distance swell systems in nearshore environments, demonstrating complex wave propagation mechanisms. Intricate swell-to-swell interactions and short-span eddy formations were observed to redirect swell patterns towards the Arabian Sea, significantly altering wave dynamics. The coastal state was predominantly influenced by swell, with total water levels increasing by ∼33 % and ∼34 % during the flooding events, predominantly attributable to wave dynamics rather than the tidal influences. The substantial rise in swell-induced flooding events along the southern southwest coast of India presents a critical environmental concern. Consequently, this study proposes developing a comprehensive metadata collection system for early warning mechanisms and provides nuanced insights into surface circulation within the Southwest Indian Ocean during the Austral autumn. By elucidating the complex interactions of eddy formations in the SEIO, the study offers crucial predictive potential for oceanic weather and climatic events in the Indian Ocean, with significant implications for future regional engineering activities.</div></div>","PeriodicalId":50563,"journal":{"name":"Dynamics of Atmospheres and Oceans","volume":"113 ","pages":"Article 101634"},"PeriodicalIF":2.0,"publicationDate":"2025-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145840695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nonlinear analysis of thermo-magneto slip flow of Jeffery fluid in a wavy curved channel","authors":"Maham Mujahid ,&nbsp;Mounirah Areshi ,&nbsp;Zaheer Abbas ,&nbsp;Muhammad Yousuf Rafiq ,&nbsp;Ibrahim E. Elseesy","doi":"10.1016/j.dynatmoce.2025.101633","DOIUrl":"10.1016/j.dynatmoce.2025.101633","url":null,"abstract":"<div><div>This study conducts an analytical examination of thermo-magneto-hydrodynamic slip flow of a Jeffery fluid through a porous wavy curved channel. The energy equation incorporates the effects of thermal radiation along with heat generation and absorption mechanisms. By formulating the governing equations in curvilinear coordinates and applying a regular perturbation method, closed-form expressions for the velocity, temperature, skin-friction coefficient, and Nusselt number are obtained. The parametric investigation indicates that both channel curvature and porous permeability enhance fluid transport, while the applied magnetic field suppresses motion. Thermal radiation notably intensifies heat transfer and facilitates bolus formation by decreasing the effective viscosity and augmenting buoyancy effects. Overall, the findings provide a useful theoretical basis for the design and optimization of advanced thermal management systems, polymer processing technologies, and MHD-based biomedical devices where non-Newtonian and radiative influences are significant.</div></div>","PeriodicalId":50563,"journal":{"name":"Dynamics of Atmospheres and Oceans","volume":"113 ","pages":"Article 101633"},"PeriodicalIF":2.0,"publicationDate":"2025-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145790294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Deep learning for sea surface temperature prediction in the Indian Ocean: A comparative study using 1D-CNN, LSTM, 1DCNN-LSTM and attention based 1DCNN-LSTM architectures","authors":"B. Sheela Rani ,&nbsp;D. Sathya Narayanan ,&nbsp;M.B. Salma Jasmine ,&nbsp;N.R. Krishnamoorthy ,&nbsp;M. Roja Raman ,&nbsp;Aneesh A. Lotliker ,&nbsp;Abhisek Chatterjee","doi":"10.1016/j.dynatmoce.2025.101632","DOIUrl":"10.1016/j.dynatmoce.2025.101632","url":null,"abstract":"<div><div>Anthropogenic activities had led to major climate changes, causing the oceans to warm rapidly. Subsequently, there is a need for accurate prediction of sea surface temperature (SST). The dynamic Indian Ocean climate, weather and marine ecology is significantly affected by SST changes. In this study, hourly and daily SST data, specifically from 15 and 7 RAMA stations (1 m deep) respectively, at different parts of Indian Ocean is utilized to forecast SST using four deep learning techniques; 1D Convolutional Neural Network (1D-CNN), Long Short-Term Memory (LSTM) network, 1DCNN-LSTM network and attention based 1DCNN-LSTM Architecture. The SST data obtained from RAMA buoy is trained using a sliding window method and model performance is evaluated based on evaluation matrices like Mean Squared Error (MSE), Root Mean Squared Error (RMSE), and Mean Absolute error (MAE). The results indicated that 1DCNN-LSTM outperforms 1D-CNN and LSTM at most sites, consistently achieving lower MSE, RMSE and MAE. The findings also revealed that in places where SST shifts significantly, the new attention based 1DCNN-LSTM model often competes with or does better than all the other models in MAE. Distinctive physical phenomena like equatorial jets, thermohaline stratification, monsoon, Indian Ocean Bipolar (IOD) and El Niño-Southern Oscillation (ENSO) bring about geographical difference in performance. Hence, the study illustrates how deep learning frameworks make better SST predictions in complex ocean basins and thereby aids in anticipating climate change.</div></div>","PeriodicalId":50563,"journal":{"name":"Dynamics of Atmospheres and Oceans","volume":"113 ","pages":"Article 101632"},"PeriodicalIF":2.0,"publicationDate":"2025-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145790295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Boundary layer interaction of immiscible non-Newtonian nanofluids in distinct shear flows with motile microorganisms","authors":"Z. Abbas,&nbsp;S. Goher,&nbsp;M.Y. Rafiq","doi":"10.1016/j.dynatmoce.2025.101629","DOIUrl":"10.1016/j.dynatmoce.2025.101629","url":null,"abstract":"<div><div>This study presents a comprehensive numerical investigation of two-phase boundary layer shear flows involving immiscible non-Newtonian Carreau and Tangent hyperbolic nanofluids incorporating motile microorganisms. The analysis explores the coupled effects of thermophoresis, Brownian motion, and thermal radiation on velocity, temperature, concentration, and microorganism density profiles across distinct shear regions. Incorporating microorganisms within nanofluids enhances thermal conductivity and stabilizes the flow structure, contributing to improved transport phenomena relevant to biomedical, energy, and environmental systems. The governing nonlinear differential equations are transformed into dimensionless form using similarity transformations and solved via the MATLAB bvp4c collocation method to ensure high numerical accuracy. A grid independence test confirms the convergence and stability of the scheme for all parametric variations. The results demonstrate that the Carreau fluid parameter promotes fluid velocity, while an increase in the viscosity ratio and shear strength ratio reduces it. Brownian motion and thermophoresis parameters suppress temperature near the interface, whereas thermal radiation enhances it. The density of motile microorganisms rises with higher bioconvection and Péclet numbers but decreases with increasing microorganism Schmidt number. Quantitative results for skin friction, Nusselt number, Sherwood number, and microorganism density validate the influence of these parameters in both regions. The findings provide valuable insights for optimizing microfluidic transport, bioconvective systems, and nanofluid-based heat exchangers where multi-phase shear interactions and microorganism activity are significant.</div></div>","PeriodicalId":50563,"journal":{"name":"Dynamics of Atmospheres and Oceans","volume":"113 ","pages":"Article 101629"},"PeriodicalIF":2.0,"publicationDate":"2025-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145684931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multiple analytic solutions for irreversible mechanism and Joule heating impact on dissipative micropolar fluid flow driven by stretching/shrinking surface with PST and PHF boundary conditions","authors":"S.M. Sachhin ,&nbsp;M.S. Bharath ,&nbsp;G.M. Sachin ,&nbsp;U.S. Mahabaleshwar ,&nbsp;D. Laroze ,&nbsp;H.F. Oztop","doi":"10.1016/j.dynatmoce.2025.101616","DOIUrl":"10.1016/j.dynatmoce.2025.101616","url":null,"abstract":"<div><div>The current research aims to examine the Joule heating and magnetic field influence on micropolar fluid flow across expanding surface, which is is significant in enhancing the efficiency in biomedical and engineering fields, In this analysis, examined the influence of entropy generation, magnetic field, porous medium, and prescribed boundary restrictions. To the best of authors knowledge, no prior research has studied all these effects simultaneously, which emphasizes the originality of the current analysis. The considered governing partial differential equations are transformed to ordinary differential equations by using similarity expressions and then formulated analytically using hypergeometric series solutions. The dual solutions have been extracted from the current analysis which offers deeper insights into the micropolar fluid behaviour under considered physical effects. The outcomes of the present analysis reveal that enhancing the porous media and magnetic field reduces the momentum by 15 %. With enhancing the internal heat source enhances the temperature by 20 %, and thermal radiation enhances temperature by 29 %, enhancing the viscosity ration reduces the velocity by 23 %. These results help in analysing the blood movement modelling, advanced medical therapies, and magnetic drug delivery among others.</div></div>","PeriodicalId":50563,"journal":{"name":"Dynamics of Atmospheres and Oceans","volume":"112 ","pages":"Article 101616"},"PeriodicalIF":2.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145618101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Energy transport in ternary hybrid nanofluid with variable thermal conductivity under the combined effects of electroviscous, electric potential, and heat generation","authors":"Shafiq Ahmad ,&nbsp;Aamir Abbas Khan ,&nbsp;Muhammad Naveed Khan ,&nbsp;Salah Knani ,&nbsp;N. Ameer Ahammad ,&nbsp;Ibrahim E. Elseesy","doi":"10.1016/j.dynatmoce.2025.101619","DOIUrl":"10.1016/j.dynatmoce.2025.101619","url":null,"abstract":"<div><div>This article uses squeezing plates containing ternary hybrid nanofluid to scrutinize the behavior of transient electroviscous fluid flow with an induced magnetic field. By dissolving the constituents, such as silicon carbide, aluminum oxide, and multiwall carbon nanotubes, in a base fluid of water, a ternary hybrid nanofluid <span><math><mrow><mi>M</mi><mi>W</mi><mi>C</mi><mi>N</mi><mi>T</mi><mo>+</mo><mi>A</mi><msub><mrow><mi>l</mi></mrow><mrow><mn>2</mn></mrow></msub><msub><mrow><mi>O</mi></mrow><mrow><mn>3</mn></mrow></msub><mo>+</mo><mi>S</mi><mi>i</mi><mi>C</mi><mo>/</mo><msub><mrow><mi>H</mi></mrow><mrow><mn>2</mn></mrow></msub><mi>O</mi></mrow></math></span> was created. The current work aims to increase the energy transfer rate for technical and industrial applications. In the presence of heat generation, thermal radiation, and varying thermal conductivity, fluid flow exhibits its thermal behavior. Through the use of similarity substitution, an ordinary differential equation (ODE) set is obtained from a system of partial differential equations (PDEs) representing the ternary hybrid nanofluid flow. After that, using the bvp4c approach, the dimensionless ordinary differential equations in the nonlinear set are solved. On ternary hybrid nanofluid (<span><math><mrow><mi>M</mi><mi>W</mi><mi>C</mi><mi>N</mi><mi>T</mi><mo>+</mo><mi>A</mi><msub><mrow><mi>l</mi></mrow><mrow><mn>2</mn></mrow></msub><msub><mrow><mi>O</mi></mrow><mrow><mn>3</mn></mrow></msub><mo>+</mo><mi>S</mi><mi>i</mi><mi>C</mi><mo>/</mo><msub><mrow><mi>H</mi></mrow><mrow><mn>2</mn></mrow></msub><mi>O</mi></mrow></math></span>) and unary nanofluid (<span><math><mrow><mi>A</mi><msub><mrow><mi>l</mi></mrow><mrow><mn>2</mn></mrow></msub><msub><mrow><mi>O</mi></mrow><mrow><mn>3</mn></mrow></msub><mo>/</mo><msub><mrow><mi>H</mi></mrow><mrow><mn>2</mn></mrow></msub><mi>O</mi></mrow></math></span>), the graphical and numerical results are found against the many parameters. The findings show that, in comparing to unary nanofluids, ternary hybrid nanofluids have a greater impact on heat transfer rate owing to the fact that the inclusion of nanofluids to the base fluid intensifies heat transport rate.</div></div>","PeriodicalId":50563,"journal":{"name":"Dynamics of Atmospheres and Oceans","volume":"112 ","pages":"Article 101619"},"PeriodicalIF":2.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145618100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Risk mapping of dynamic dust storms and multi-hazard maritime navigation in the red sea using machine learning and MODIS Data","authors":"Yazeed Alsubhi ,&nbsp;Bassam M. Aljahdali ,&nbsp;Ayman F. Alghanmi ,&nbsp;Hussain T. Sulaimani ,&nbsp;Ahmad E. Samman","doi":"10.1016/j.dynatmoce.2025.101621","DOIUrl":"10.1016/j.dynatmoce.2025.101621","url":null,"abstract":"<div><div>Dust storms represent a significant hazard to maritime navigation, particularly in regions such as Saudi Arabia, where frequent dust events, driven by vast desert landscapes and oceanic wind patterns, reduce visibility and disrupt maritime operations. This paper proposes a comprehensive framework for evaluating visibility risks posed by dust storms in Saudi Arabian maritime zones, specifically focusing on the Red Sea. The methodology considers MODIS AOD (Aerosol Optical Depth) data, wind speed, and cloud cover to develop a dynamic risk assessment model using random forest (RF) for dust storm detection and visibility risk prediction. The model integrates spatial data layers for environmental factors (wind, waves, and depth), creating seasonal risk maps that dynamically adjust based on changing environmental conditions. GIS technology was used to visualize risk zones, and the RF model provided data-driven weighting of risk factors. The model’s performance was validated using metrics such as probability of detection (POD) (0.92), probability of false detection (PFD) (0.05), and equitable threat score (ETS) (0.85), demonstrating superior accuracy over traditional methods like analytic hierarchy process (AHP) and CRiteria importance through intercriteria correlation (CRITIC). The findings indicate that Autumn represents the most hazardous season for maritime navigation due to frequent dust storms, with the central Red Sea being the most impacted area. The results demonstrate the potential of this approach for improving navigation safety and early warning tools in the Red Sea and similar arid coastal regions.</div></div>","PeriodicalId":50563,"journal":{"name":"Dynamics of Atmospheres and Oceans","volume":"113 ","pages":"Article 101621"},"PeriodicalIF":2.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145684930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Behavior of magneto-viscoelastic fluid flow through a permeable medium with heat source/sink using hybrid methodology","authors":"P.P. Nayak ,&nbsp;S.R. Mishra ,&nbsp;Subhajit Panda","doi":"10.1016/j.dynatmoce.2025.101620","DOIUrl":"10.1016/j.dynatmoce.2025.101620","url":null,"abstract":"<div><div>Viscoelastic fluids change their rheological properties in response to an applied electric or magnetic field. In particular, applications in vehicle damping systems, vibration control devices, shock absorbers, and smart materials for structural engineering the role of viscoelastic fluid is vital. Therefore, the proposed study investigates the influence of magnetized viscoelastic fluid through a permeable medium due to the interaction of a heat source/sink. The free convection with radiative heat transfer characterizes the transport properties significantly. The relevant similarity rules are adopted for the transmutation of the governing phenomena into ordinary as well as dimensionless. Further, the complexity of the flow phenomena impulses to the implementation of perturbation technique to reduce the order of the problem, and then a numerical method such as shooting combined with Runge-Kutta fourth-order contributes to solving the system. Graphs are used to illustrate the characteristics of physical parameters that contribute to the flow phenomena. However, the analysis ended with important flow behaviour described briefly in the conclusion. The study reveals that the heat transfer shows dual behavior with magnetic and radiation effects, being stronger in permeable media. Magnetization reduces shear and mass transfer, while buoyancy boosts velocity. Radiation and chemical reactions influence temperature rise and concentration drop, respectively.</div></div>","PeriodicalId":50563,"journal":{"name":"Dynamics of Atmospheres and Oceans","volume":"113 ","pages":"Article 101620"},"PeriodicalIF":2.0,"publicationDate":"2025-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145625414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}