skip to Main Content
Sale

Generator Room Ventilation Applying Fans

Rated 0 out of 5
(be the first to review)

$45.00 $11.00

The present problem simulates the airflow around several generators and the effect of a set of fans on them, using ansys fluent software.

This product includes Mesh file and a Training Movie.

There are some free products to check our service quality.

To order your ANSYS Fluent project (CFD simulation and training), contact our experts via [email protected], online support, or WhatsApp.

Description

Project Description

The present problem simulates the airflow around several generators and the effect of a set of fans on them, using ansys fluent software. Generators are generally a mechanical device that can convert mechanical energy into AC or DC electrical energy. This process of generating electricity is done by changing the magnetic field on a conductor. An alternator is a part of a generator in which a magnetic field (rotor) rotates around an armature (stator). In this simulation, a shed is modeled as the location of 30 rows of generators. The open air flow enters the interior of the generator room from the roof of the shed and in front of each of the generator devices.

On the other hand, in this simulation, an attempt has been made to consider two groups of large and small fans inside this shed and in the areas around the alternator generator to measure the effect of the fan on the air flow around the generator. Large fans are modeled in a circle with a diameter of 1400 mm in the space between the two generators and small fans are designed in a square shape with a side of 900 mm and behind each generator. Large fans have a volume flow equivalent to 31000 Ls-1 and small fans have a volume flow equivalent to 12000 Ls-1, which by dividing these volumetric flow rates by the density of air flow, the mass flow rate of each Large and small fans are equal to 37.975 kg.s-1 and 14.7 kg.s-1, respectively.

Project Description

To simulate the air inlet flows, the inlet pressure condition equivalent to the relative pressure of 0 pascal is used and to simulate the outlet air flow, the outlet pressure condition is applied. To determine the amount of exhaust air flow from each of the fans in the pressure outlet boundary condition, the target mass flow mode is used; Thus, the amount of outlet air flow rate is defined based on a range of pressure values ​​between the maximum and minimum pressure values. In general, the purpose of this work is to investigate the speed and volume of air in the areas around the alternator behind the generator and the space between the devices.

The effect of the change in height at which the large fans are installed has also been measured on the airflow. In fact, the large fans in the three different tests were designed at different heights above ground level.

Generator Room Geometry & Mesh

The current model is designed in three dimensions using Design Modeler software. The model includes a generator room (shed) in which 30 generators are located in series in two halves of the shed. Behind each of the generators, there is a small square fan and in the space between each of the two adjacent fans, there is a big circular fan with a diameter of 1400 mm. This project has been done in three modes in which the height of large fans is different. Also, sections as open air ducts without using a fan have been installed on the roof of the shed and also in the front part of the generators.

generator

The meshing of the model has been done using ANSYS Meshing software, and the mesh type is unstructured. The element number is 5033223. The following figure shows the mesh.

generator

Generator Room Ventilation CFD Simulation

We consider several assumptions to simulate the present model:

  • We perform a pressure-based solver.
  • The simulation is steady.
  • The gravity effect on the fluid is ignored.

The following table represents a summary of the defining steps of the problem and its solution:

Models
Viscous k-epsilon
k-epsilon model standard
near wall treatment standard wall functions
Boundary conditions
Main Inlet Pressure Inlet
gauge pressure 0 pascal
Ceiling Inlet Pressure Inlet
gauge pressure 0 pascal
Small Fan Pressure Outlet
gauge pressure 0 pascal
target mass flow rate 14.7 kg.s-1
upper limit of absolute pressure 5000000 pascal
downer limit of absolute pressure 1 pascal
Large Fan Pressure Outlet
gauge pressure 0 pascal
target mass flow rate 37.975 kg.s-1
upper limit of absolute pressure 5000000 pascal
downer limit of absolute pressure 1 pascal
Walls Wall
wall motion stationary wall
Methods
Pressure-Velocity Coupling Simple
Pressure second order
momentum second order upwind
turbulent kinetic energy first order upwind
turbulent dissipation rate first order upwind
Initialization
Initialization methods Hybrid

Results

At the end of the solution process, two-dimensional and three-dimensional contours related to pressure and velocity in three different modes, including three different heights, were obtained from the location of large fans. Two-dimensional contours are defined in two sections Y-Z and X-Y.

There is a mesh file in this product. By the way, the Training File presents how to solve the problem and extract all desired results.

Reviews

There are no reviews yet.

Leave a customer review

Your email address will not be published. Required fields are marked *

Back To Top
Search
you tube
Call On WhatsApp