Week 4.1: Project Steady state simulation of flow over a throttle body

introduction

A throttle body is essentially a large air valve that sits between the intake manifold and the air intake pipe, an engine has one throttle body, which bolts to the intake manifolds plenum. a throttle body controls airflow into the engine, a crucial factor for controlling the engine's air/fuel ratio. throttle bodies come in several shapes, sizes, and configurations and can perform several tasks outside of their normal air metering duties.

Throttle bodies usually use butterfly valves, these valves consist of a casing with a large hole in the center, which is filled with a steel plate called a butterfly or throttle plate. the throttle shaft is a rod that passes through the housing and is connected to the throttle cable shaft is the rod that passes through the housing and is connected to throttle cable on the outside and throttle plate on the inside, when the throttle shaft turns, it rotates the throttle plate,alloe=wing air to go around it and into the engine.

geometry

problem setup

meshing

results

velocity

velocity change from 0- 1900 m/s

we can view that there is a sudden decrease in velocity near the throttle valve shownn in blue color.

pressure

pressure is inversely propulsion to velocity so higher velocity in the inlet as flow occurs pressure value decrease.