Abstract The authors of the work numerically studied aerodynamic coefficients sail blade, during which patterns three-dimensional flow around airflow and pressure distribution field were obtained. triangular blade is used as power element wind turbines. modeling was based on Reynolds-averaged Navier–Stokes equations (RANS) using ANSYS FLUENT computer program. A pattern obtained, gives a physica...

Recent research has used deep learning to develop partial differential equation (PDE) models in science and engineering. The functional form of the PDE is determined by a neural network, network parameters are calibrated available data. Calibration embedded can be performed optimizing over PDE. Motivated these applications, we rigorously study optimization class linear elliptic PDEs with terms....

Abstract In this paper, a Computational Fluid-Dynamics (CFD) analysis on heat transfer characteristic using Reynolds Averaged Navier-Stokes (RANS) equations rectangular channel with ribbed surfaces is presented. Several numerical simulations have been carried out convective of an air flow through 1:10 aspect ratio, 120 mm wide, 840 long, 90° ribs. Ribs square cross section 4 side and three diff...

NUMERICAL SIMULA nON OF THE AERODYNAMIC PERFORMANCE OF AN H-ROTOR YanChen August 1 st, 2011 Vertical axis wind turbines (VAWTs) are devices to convert wind energy into electricity. Unlike horizontal axis wind turbines (HA WT) where the main rotor shaft is set horizontally, VAWTs use vertical rotor shaft. Unlike HAWTs, VAWTs can be effectively used in urban environment where flow is characterize...

The primary objective of this study is to evaluate the accuracy of using computational fluid dynamics (CFD) turbulence models to predict entropy generation rates in bypass transitional boundary layers flows under zero and adverse pressure gradients. Entropy generation rates in such flows are evaluated employing the commercial CFD software, ANSYS FLUENT. Various turbulence and transitional model...

Turbulent jet large eddy simulations (LES) are performed at Mach 0.9 and Reynolds number around 10. Implicit large-eddy simulation (ILES) is employed, namely omitting explicit subgrid scale models. The Reynolds-averaged Navier-Stokes (RANS) solution is blended into the near wall region. This makes an overall hybrid LES-RANS approach. A Hamilton-Jacobi equation is applied to remove the disparate...

• A benchmark experimental database for the transitional cavity flow is presented. RANS simulations were conducted using standard k-ω and SST turbulence models. main recirculation region two secondary vortices inside found. The separating does not reattach on bottom wall of cavity. forward-facing edge reattachment highly unsteady. yields more accurate predictions than k-ω. We present an flow. o...

The Flux Reconstruction Method/ Correction Procedure via Reconstruction (FR/ CPR) is a high-order numerical method for computational fluid dynamics. It combines the Finite Element method and the Finite Volume method, with a polynomial distribution of variables in a computational cell, and Riemann solver applied at the cell boundaries. The FR/ CPR method has a similar resolving ability to the fa...

Abstract Reynolds‐averaged Navier–Stokes simulation (RaNS) is state‐of‐the‐art for numerical analysis of complex flows at high Reynolds number. Standalone RaNS may yield a reasonable estimate the wall‐shear stress and turbulent drag if proper wall‐function prescribed, but detailed turbulence statistics cannot be obtained, especially wall. This lack in modeling addressed here by stochastic decon...

The entropy generation analysis of fully turbulent convective heat transfer to nanofluids in a circular tube is investigated numerically using the Reynolds Averaged Navier–Stokes (RANS) model. The nanofluids with particle concentration of 0%, 1%, 2%, 4% and 6% are treated as single phases of effective properties. The uniform heat flux is enforced at the tube wall. To confirm the validity of the...