Turbulent heat transfer predictions using the –f model on unstructured meshes

Numerical Predictions of Turbulent Mixed Convection Heat Transfer to Supercritical Fluids Using Various Low Reynolds Number k-e Turbulence Models

There are a number of systems in which supercritical cryogenic fluids are used as coolants or propellant fluids. In some modern military aircraft, the fuel is pressurized above its critical point and used as a coolant to remove heat from the aircraft engine. Accurate prediction of heat transfer coefficients to turbulent flows of supercritical fluids is essential in design of such systems. One o...

Aerodynamic Design Using Unstructured Meshes

A methodology for performing optimization on 2D and 3D unstructured grids based on the Euler equations is presented. The same, low-memory-cost explicit relaxation algorithm is used to resolve the discrete equations which govern the ow, linearized direct and adjoint problems. The analysis schemes, for both 2D and 3D, are high resolution Local-Extremum-Diminishing (LED) schemes and use Roe decomp...

Transonic Turbulent Flow Computations on Unstructured Triangular Grids

the effect of using model essays on the develpment of writing proficiency of iranina pre-intermediate efl learners

abstract the present study was conducted to investigate the effect of using model essays on the development of writing proficiency of iranian pre-intermediate efl learners. to fulfill the purpose of the study, 55 pre- intermediate learners of parsa language institute were chosen by means of administering proficiency test. based on the results of the pretest, two matched groups, one as the expe...

Partitioning unstructured meshes using a distributed optimization model

Large meshes computations arise in many large-scale scientific and engineering problems, including finite volume methods for computational fluid dynamics, and finite element methods for structure analysis. If these meshes have to be solved efficiently on distributed memory parallel processors, a partitioning strategy should be designed so that on the one hand, processors have approximately equa...