... computational studies are operated by employing the ansys fluent . Furthermore, experiments are steered to justify the computational findings. The investigations are conceded over Reynolds numbers: 5000–28,000. The impact of operational factors on Nusselt number, friction factor, and channel exit air...

... 06 2024 24 07 2024 Graphical Abstract Figure microchannel heat transfer Nusselt number micro-fins thermo-fluid coupling Navier–Stokes equation heat transfer enhancement thermophysical properties Humans have been intrigued by a variety of biological forms...

... of using different numbers of turbulators, their placement in different locations, their arrangement at different distances, and their use at different Reynolds, the changes in pressure drop, Nusselt number, friction factor, efficiency, exergy loss rate, and NTU were determined with the full-factor...

... height. The pertinent quantities, i.e., heat dissipation rate, Nusselt number, effectiveness, mass of heat sink, and heat dissipation per unit mass, have been obtained by performing 3D computational simulations. The results obtained are compared to assess the thermal performance of heat sinks. We found...

...-shaped twisted rib element with staggering orientation. Experimentations are performed for various flow Reynolds numbers ranging from 3 k to 21 k, roughness pitch-to-rib height ratio ranging from 7 to 11, and staggering distance-to-rib height ratio between 2 and 6. Dispersion of Nusselt number over...

... that the TPEF of CMSP (ULHB)-STHE is higher than that of the conventional STHE. The average enhancement is approximately 28% for ULHB STHE than the conventional one. Further, variations in velocity, turbulence kinetic energy, and local Nusselt number along the tube length are examined to understand the thermal...

...Mahyar Pourghasemi; Nima Fathi Achieving accurate experimental data in conjugate heat transfer studies to calculate Nusselt number can be challenging due to its complex three-dimensional thermal hydraulics nature. This study is devoted to evaluating the accuracy and reliability of experimental...

... flow characteristics. Email: tejpratap@am.iitd.ac.in 1 Corresponding author. Email: adewan@am.iitd.ac.in 19 07 2021 14 10 2021 20 10 2021 23 11 2021 Nusselt number turbulent dual jet amplitude heat transfer turbulence models thermal hydraulic performance...

...Yogendra Rathor; K. R. Aharwal The steady-state experiment using liquid crystal thermography has been conducted for the analysis of Nusselt number distribution over the absorber surface of solar air heater (SAH) duct having a gap with the staggered arrangement in inclined rib geometry to recuperate...

.... Two types of inserts are used: simple and modified spiral tape inserts. The modified spiral tape is consisting of zig-zag cuts having notches (or grooves) and projected parts. The Nusselt number, friction factor, and thermal performance factor are calculated for different cases: (1) tube...

... made between the coolant medium to find out their heat dissipation potential and flow characteristics in the heat sink. Results obtained in terms of average bottom wall temperature, heat transfer coefficient, Nusselt number (Nu), and pressure drop demonstrate that heat sink with rhombus pin fins...

... a great impact on the heat transfer characteristics due to its high value of thermal conductivity and irregular motion of the particles. As a result, the average Nusselt number (Nu avg ) shows an increasing trend for increasing solid-volume fraction values. Email: saurabh@campus.technion.ac.il...

..., and non-dimensional clearance C * = 0.10, 0.15, and 0.40. The axial development of various fluid flow quantities, such as the pressure defect (P*), local Nusselt number (Nu l ), and the bulk temperature of the fluid (θ b ) has been presented for each of the property combinations. Nu l is observed to have...

... of the cylinder. The variation of average Nusselt number (Nu), local Nu, and contribution to total heat loss from different surfaces with the pertinent parameters have been elucidated graphically. The average Nu is always more for the cylinder in the air compared with the case when it is on the ground. However...

... the effects of wavelength (λ), porosity (ξ), and height (H) of the sinusoidal wave of the insert as well as the Reynolds number (Re) on the friction factors (f) and Nusselt numbers (Nu). Twelve inserts are formed from the flat metal mesh screens for testing between the Reynolds number (Re) of 400 and 35,000...

... and the overall heat transfer characteristics of the system. New extensive results are visualized in terms of streamlines, isotherm contours, and variation of the local Nusselt number along various surfaces. Additional insights are developed by examining the shear-rate contours and the yield surfaces delineating...

... / R , dimensionless spacing Nu = Hr / λ air , local Nusselt number Nu ¯ = h ¯ R / λ air , mean Nusselt number Pr = μC P / λ , Prandtl number...

... kg/min (in the range of laminar flow); the wall heat flux is nearly kept constant. The experimental results reveal that utilizing the nanofluid increases the convection heat transfer coefficient and Nusselt number in comparison to water; these outcomes are also observed when the radius of curvature...

... nanofluids Nusselt number radiator Prandtl number Reynolds number thermophysical properties louvered fins With increasing demands for greater engine output, air conditioning (AC) capacity, smaller hood space, and more stringent emission standards, the heat dissipation...

... = coefficients in the turbulence model f = friction factor K = thermal conductivity Pr = Prandtl number Nu = Nusselt number Ra = Rayleigh number m · = mass flow rate (kg s −1 ) D = hydraulic diameter (m) d = diameter (m) Q u...