Results 81 to 90 of about 377,594 (201)

Progress in turbulence modeling for complex flow fields including effects of compressibility [PDF]

Two second-order-closure turbulence models were devised that are suitable for predicting properties of complex turbulent flow fields in both incompressible and compressible fluids.
Rubesin, M. W., Wilcox, D. C.
core   +1 more source

Reynolds Stress Model Adjustments for Separated Flows [PDF]

14th WCCM-ECCOMAS Congress, 2021
A. Troshin, I. Matyash, S. Mikhaylov
openaire   +1 more source

Application of a Novel Weighted Essentially Non-Oscillatory Scheme for Reynolds-Averaged Stress Model and Reynolds-Averaged Stress Model/Large Eddy Simulation (RANS/LES) Coupled Simulations in Turbomachinery Flows

Applied Sciences
In numerical simulations, achieving high accuracy without significantly increasing computational cost is often a challenge. To address this issue, this paper proposes an improved finite volume Weighted Essentially Non-Oscillatory (WENO) scheme for ...
Hao Wang, Dongdong Zhong, Shuo Zhang, Xingshuang Wu, Ning Ge   +4 more
doaj   +1 more source

Renormalization group analysis of the Reynolds stress transport equation [PDF]

The pressure velocity correlation and return to isotropy term in the Reynolds stress transport equation are analyzed using the Yakhot-Orszag renormalization group.
Barton, J. M., Rubinstein, R.
core   +1 more source

Immersed boundary method predictions of shear stresses for different flow topologies occuring in cerebral aneurysms [PDF]

, 2010
A volume-penalizing immersed boundary method is presented that facilitates the computation of incompressible fluid flow in complex flow domains. We apply this method to simulate the flow in cerebral aneurysms, and focus on the accuracy with which the ...
Geurts, Bernard J., Lopez Penha, David J., Mikhal, Julia, Slump, Cornelis H.   +3 more
core   +1 more source

Computational simulation of transition to turbulence through inverse modeling [PDF]

The present investigation has focused on a computational methodology for the fundamental case of transition in channel flow, in which recently published experimental data are utilized both as a stimulus and as a measure of merit of the method.
Sepri, Paavo
core   +1 more source

Reynolds stress models of homogeneous turbulence [PDF]

Existing and new models for the rapid and the return terms in the Reynolds stress equations were tested in two ways. One, by direct comparison of the model with simulation data.
Chen, J. Y., Mansour, N. N., Shih, T.-H.
core   +1 more source

Anisotropy of Reynolds Stresses and Their Dissipation Rates in Lean H₂-Air Premixed Flames in Different Combustion Regimes

Energies
The interrelation between Reynolds stresses and their dissipation rate tensors for different Karlovitz number values was analysed using a direct numerical simulation (DNS) database of turbulent statistically planar premixed H2-air flames with an ...
Nilanjan Chakraborty, Sanjeev Kumar Ghai, Hong G. Im   +2 more
doaj   +1 more source

Multigrid acceleration and turbulence models for computations of 3D turbulent jets in crossflow [PDF]

A multigrid method is presented for the calculation of three-dimensional turbulent jets in crossflow. Turbulence closure is achieved with either the standard k-epsilon model or a Reynolds Stress Model (RSM).
Demuren, A. O.
core   +1 more source

Comparative predictions of turbulent non-isothermal flow of a viscoplastic fluid with yield stress

Heliyon
RANS simulation of turbulent non-isothermal flow in a pipe by transition of Newtonian fluid into a viscoplastic non-Newtonian fluid is carried out.
M.A. Pakhomov, U.K. Zhapbasbayev
doaj   +1 more source