Effects of oscillated wall on the turbulent structure and heat transfer of three-dimensional wall jet DOI
Muthana Mraweh Khairi, Seyed Esmail Razavi, Faramarz Talati

и другие.

Fluid Dynamics Research, Год журнала: 2024, Номер 56(5), С. 055502 - 055502

Опубликована: Сен. 12, 2024

Abstract In this research, a three-dimensional turbulent wall jet was modeled using an Improved Delayed Detached Eddy Simulation to examine its flow and thermal properties. The accuracy of the simulation confirmed by comparing key characteristics with experimental data. study involved introducing oscillating hot within computational domain observe their effects on behavior turbulence structure. OpenFOAM v2012 utilized for simulations based 3D channel design. structure exhibited distinct separated, small-scale, large-scale domain. findings indicated that reducing height increased Nusselt number, positioning near core also number. Additionally, increasing frequency amplitude resulted in higher These results contribute deeper understanding fluid physics specific scenario can enhance knowledge fields solid interaction. analysis revealed lower created elongated structures, placing at end had less impact smoothing structures due presence very strong, large structures.

Язык: Английский

Mixed convective heat transfer in a square cavity filled with power‐law fluids under active flow modulation DOI

Md. Nasim Mia,

Muhammad Abdullah, Arpita Das

и другие.

Heat Transfer, Год журнала: 2024, Номер 53(8), С. 4422 - 4447

Опубликована: Авг. 6, 2024

Abstract The current study presents a computational investigation of mixed convective heat transfer in square enclosure containing power‐law fluid. An active flow modulator is employed the form flat plate with negligible thickness, and convection achieved through clockwise rotation plate. modeled by incorporating moving mesh technique. solution then obtained applying Finite Element Technique under arbitrary Lagrangian–Eulerian framework. Numerical validation performed contemporary research studies consisting rotating plates to justify accuracy present study. conducted at constant Prandtl number Pr = 1.0 Reynolds Re 500 while varying index (0.6 ≤ n 1.4) Richardson (0.1 Ri 10.0). results have been presented terms thermal fields, spatially averaged Nusselt number, power consumption plate, velocity temperature profile enclosure. numerical findings indicate that higher encourages transfer. For shear‐thinning fluid, 37% augmentation observed comparison Newtonian fluid 10. However, case shear‐thickening performance was reduced 21.13%. Small oscillations are naturally dominated for fluids, but none or fluids. In addition, demonstrate has positive impact on fluids ( > 1) an adverse effect < 1). Furthermore, decreases as increases, it becomes negative beyond due increase natural strength.

Язык: Английский

Процитировано

3

Thermo-hydraulic Perspectives of non-Newtonian channel flow with Active Flow Modulation: A CFD study DOI
Fahim Tanfeez Mahmood, Arpita Das,

Taspia Shawkat Chowdhury

и другие.

Journal of Non-Newtonian Fluid Mechanics, Год журнала: 2025, Номер unknown, С. 105416 - 105416

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0

Computational modelling and analysis of heat transfer enhancement in straight circular pipe with pulsating flow DOI
Siddhanath V. Nishandar, Ashok T. Pise, Pramodkumar M. Bagade

и другие.

International Journal on Interactive Design and Manufacturing (IJIDeM), Год журнала: 2024, Номер 19(3), С. 1951 - 1969

Опубликована: Июнь 4, 2024

Язык: Английский

Процитировано

3

Effects of oscillated wall on the turbulent structure and heat transfer of three-dimensional wall jet DOI
Muthana Mraweh Khairi, Seyed Esmail Razavi, Faramarz Talati

и другие.

Fluid Dynamics Research, Год журнала: 2024, Номер 56(5), С. 055502 - 055502

Опубликована: Сен. 12, 2024

Abstract In this research, a three-dimensional turbulent wall jet was modeled using an Improved Delayed Detached Eddy Simulation to examine its flow and thermal properties. The accuracy of the simulation confirmed by comparing key characteristics with experimental data. study involved introducing oscillating hot within computational domain observe their effects on behavior turbulence structure. OpenFOAM v2012 utilized for simulations based 3D channel design. structure exhibited distinct separated, small-scale, large-scale domain. findings indicated that reducing height increased Nusselt number, positioning near core also number. Additionally, increasing frequency amplitude resulted in higher These results contribute deeper understanding fluid physics specific scenario can enhance knowledge fields solid interaction. analysis revealed lower created elongated structures, placing at end had less impact smoothing structures due presence very strong, large structures.

Язык: Английский

Процитировано

0