CFD approach

Part 1 book "Internal combustion engines improving performance, fuel economy and emissions" includes content: Development and assessment of an integrated 1D-3D CFD codes coupling methodology for diesel engine combustion simulation and optimization; investigation on an injection strategy optimization for diesel engines using a one dimensional spray model; a control oriented engine torque online estimation approach for gasoline engines based on in cycle crankshaft speed dynamics,... and other contents.

155p muasambanhan07 18-02-2024 5 2   Download

The aim of this research is to employ a sensitivity study for the total thrust of a ducted twin counter-rotating propeller system design for UAV applications using computational fluid dynamics (CFD). Two factors were investigated: propeller spacing and difference between blades pitch angle. Using discrete values for both factors, 32 designs were analysed and evaluated. The same approach was also used for an equivalent unducted propeller system to access the influence of the duct.

142p runthenight07 01-03-2023 8 2   Download

Until now, two phase fluid models used in CFD simulation give only reasonable results in comparison with experiments for several specific cases. Calibration of necessary parameters in CFD models towards more reasonable results in comparison with those from experiment test is still challenged. This study presents CFD simulation for calculation void distribution along a vertical channel with 7 meter high in ENTEK BM test.

9p vidumbledore 06-01-2023 10 2   Download

Glucose oxidase was covalently immobilized to a porous electrode, which was developed by using ferrocene functionalized polyethyleneimine, multiwall carbon nanotubes, and carbon cloth for biofuel cell applications in our recent studies. The kinetics parameters (i.e. kM, Vmax) and other parameters required for the modeling study were determined experimentally. Fuel cell flow channel geometry was analyzed by a computational fluid dynamics modeling approach. Substrate flow rate and mass transfer for each proposed channel type were considered in the simulations.

17p tudichquannguyet 29-11-2021 5 1   Download

This paper presents an approach using the CFD method to build a calculated model for studying aerodynamic interaction between the main rotor and helicopter fuselage. The calculated model consists of two components which are the main rotor and helicopter fuselage, that is capable of determining the aerodynamic characteristics of the main rotor in consideration of the influence of the helicopter fuselage.

9p cothumenhmong11 05-05-2021 27 1   Download

The effect of football neck collar on the right external carotid blood flow was investigated for ten healthy subjects using Echo-Doppler technique and computational fluid dynamics (CFD) approach. Carotid is in charge of blooding head’s parts including the brain and eyes.

8p tohitohi 19-05-2020 14 0   Download

The exhaust system being a critical system of any automotive vehicle plays a responsible role of improving the ride quality of the vehicle and fuel economy. The effective design of exhaust system is critical in order to ensure the required exhaust gas is exited from the engine and at the same time, the noise is attenuated. The exhaust system attenuates the noise from the engine without deteriorating the engine performance by ensuring an optimum value of exhaust backpressure.

10p trinhthamhodang1212 04-04-2020 47 1   Download

Reverse circulation down-the-hole (RC-DTH) air hammers have been widely used in construction and mining activities owing to their high drilling efficiency and good dust control performance. This paper presents a computational fluid dynamics (CFD) approach with the dynamic mesh method for evaluating the performance of RC-DTH air hammers. Nine stages of operating conditions of the RC-DTH air hammer are described herein to better understand the operating mechanism of the RC-DTH air hammer.

9p caygaocaolon1 13-11-2019 20 0   Download

Anisotropic distribution of the turbulent kinetic energy and the near-field excitations are the main causes of the steady state Flow-Induced Vibration (FIV) which could lead to fretting wear damage in vertically arranged supported slender rods. In this article, a combined Computational Fluid Dynamics (CFD) and Computational Structural Mechanic (CSM) approach named two-way Fluid-Structure Interaction (FSI) is used to investigate the modal characteristics of a typical rod's vibration.

6p minhxaminhyeu3 12-06-2019 16 0   Download

The present work involves computational fluid dynamics (CFD) study of dust particle removal efficiency of a venturi scrubber operating in self-priming mode using ANSYS CFX. Titanium oxide (TiO2) particles having sizes of 1 micron have been taken as dust particles. CFD methodology to simulate the venturi scrubber has been first developed. The cascade atomization and breakup (CAB) model has been used to predict deformation of water droplets, whereas the Eulerian eLagrangian approach has been used to handle multiphase flow involving air, dust, and water.

8p minhxaminhyeu3 25-06-2019 10 0   Download