Monometer CFD Simulation by Ansys Fluent, Training

$120.00 Student Discount

In this project, a monometer has been simulated, and the results of this simulation have been investigated.

Special Offers For Single Product

If you need the Geometry designing and Mesh generation training video for one product, you can choose this option.
If you need expert consultation through the training video, this option gives you 1-hour technical support.
The journal file in ANSYS Fluent is used to record and automate simulations for repeatability and batch processing.
editable geometry and mesh allows users to create and modify geometry and mesh to define the computational domain for simulations.
The case and data files in ANSYS Fluent store the simulation setup and results, respectively, for analysis and post-processing.
Geometry, Mesh, and CFD Simulation methodologygy explanation, result analysis and conclusion
The MR CFD certification can be a valuable addition to a student resume, and passing the interactive test can demonstrate a strong understanding of CFD simulation principles and techniques related to this product.

Description

Monometer Project Description

In this project, we study a Monometer CFD Simulation by Ansys Fluent, and it has been shown how there is variation in U-tube manometric fluid column. The multiphase  VOF model has been used. A convergent and divergent nozzle has been used to create a pressure difference. One end of the manometer is attached at the throat, and the other at the converging section. There is a rise in the liquid column in the U- tube manometer at the low-pressure region.

Monometer CFD Simulation by Ansys Fluent

Manometers are pressure measurement devices that are commonly used in everyday life. For example, pressures in piping systems are constantly monitored using these devices. The U-tube manometer is a special manometer that gets its name from its U-shaped tube. The straight portions of this U are commonly referred to as the manometer’s arms, limbs, or ends. The manometer is typically filled with a dense, colored fluid called the manometer fluid, which is used to visualize the pressure difference between the two ends of the tube. As the pressure at one of its ends increases, the manometer fluid inside the tube is pushed downward at that end.

This causes the manometer fluid to rise at the other end of the device. The difference in the fluid levels between the two ends is then used to measure the pressure difference. When used properly, the manometer, one of the earliest pressure-measuring instruments, is very accurate.   The manometer has no moving parts subject to wear, age, or fatigue. Manometers operate on the Hydrostatic Balance Principle: a liquid column of known height will exert a known pressure when the weight per unit volume of the liquid is known.

Geometry & Mesh

The 2-D geometry of the present model is generated using Design Modeler software.

Monometer

The meshing of the present model has been done using Ansys Meshing software. The mesh type is unstructured in all of the computational domains, and the element number is equal to 42413.

Ansys Meshing

CFD Simulation

To simulate the present model, we consider several assumptions:

  • The solver is pressure-based.
  • The current simulation is unsteady in terms of time.
  • The gravity effect is equivalent to -9.81 m.s-1.

Here is a summary of the steps for defining the problem and its solution in the following table:

 

Models

 

 

Multiphase

 

 

 

 

Homogeneous model Volume of fluid
 

 

 

Number of Eulerian phases 2(air& mercury)
 

 

 

Interface modeling Sharp
 

 

Formulation explicit
 

 

 

Body force formulation Implicit body force
 

Viscous model

 

k-epsilon
 

Material Properties

 

 

Air

 

 

 

 

Density 1.225
 

 

 

viscosity 1.7894e-05
 

mercury

 

 

 

 

Density 13529
 

 

 

viscosity 0.001523
Boundary conditions
Inlet air

 

Velocity inlet
volume fraction

 

1
 

 

 

velocity magnitude 1.8 m.s-1
Outlet Pressure outlet
 

gauge pressure

 

 

0 Pascal

 

 

 

air backflow volume fraction

 

 

 

0

Solution Method
 

Pressure-velocity coupling

 

 

Piso

 

Spatial discretization

 

 

pressure

 

presto

 

momentum

 

first-order upwind

 

 

 

 

 

Volume fraction

 

 

Geo reconstruct

 

 

 

 

Turbulent kinetic energy

 

First-order upwind

 

 

 

 

Turbulent dissipation rate

 

 

First-order upwind

Initialization
 

Initialization method

 

 

Standard

 

Patch

 

 

Phase

 

air

 

 

 

 

Variable

 

 

Volume Fraction

 

 

 

 

Registers to patch

 

region_0

 

 

 

Value

 

 

0

Run calculation
Time step size  

0.001

Max iterations/time step  

10

 

Number of time steps

 

1200

Monometer Results

First, a volume fraction diagram was drawn in different positions in this simulation. Then two-dimensional contours related to density, streamline, air volume fraction and mercury volume fraction were obtained. The images show that Initially, the height of the liquid column is equal on both sides. But as the gas enters the manometer, the height of the mercury column changes.

Monometer

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