Flow through a Stop Valve

Overview

In most internal flows where fluids like air or water are transported through piping systems, the fluids experience loss in momentum and energy because of various factors like friction, sharp corners and fixtures, to name a few. Losses associated with friction are called major losses and the losses associated with the pipe bends, valves, sharp corners, etc., are called minor losses. Contrary to what the name suggests, minor losses can have a significant impact on the total pressure loss across the system. One of the most common types of fixtures are valves which are used to regulate, control and/or direct the flow of water. A stop valve is used to reduce or completely stop the flow of liquid through a pipeline. Common applications for such a stop valve include domestic water supply systems, faucets, taps, etc.

Objectives

In this example, you will learn how to simulate the flow through a partially closed stop valve and analyze the physics of the minor loss associated with the stop valve.

Setup

Download the Mesh file required for setting up the simulation and associated Case & Data files here. Follow the instructions below to set up this simulation in Ansys Fluent starting with the Mesh file. In case you face any issues setting up or running the simulation, refer to the corresponding initial and final Case and Data files.

Results & Discussion

Let’s now analyze the results from the simulation and understand how water flows through a stop valve.