Reference no: EM133015047
49312 Advanced Flow Modelling - University of Technology Sydney
CFD Assignment
Objectives
Objectives of this assignment are:
1. Numerically simulate and analyse the heat transfer in a double pipe heat exchanger (Square Cross-section).
2. Numerically explore how this heat exchanger performance can be improved
3. Develop competency in using FLUENT with conjugate heat transfer
4. Develop analysis skills across analytical and numerical methods of assessing heat exchanger performance
System to be modelled
The hot working fluid passes through the inner pipe and cold fluid passes through the outer pipe.
The fluid flow properties for the hot and the cold fluid
Hot fluid mass flow rate 1.2 kg/s
Cold fluid mass flow rate 1.2 kg/s
Hot fluid temperature 150°C
Cold fluid temperature 30°C
Absolute pressure for hot fluid 101325 Pa
Absolute pressure for cold fluid 101325 Pa Fluids (water)
Procedure and discussion points:
1. Create the computational geometry in DesignModeler/ Solidwroks/any CAD software with the mentioned dimensions.
2. Build an appropriate mesh for the model and perform a grid refinement study.
3. Using the converged grid, check the iterative convergence.
4. Aluminium double pipe heat exchanger, Parallel flow with
½ hot and ½ cold
5. Cooper double pipe heat exchanger, Parallel flow with 1/2 hot and 1/2 cold
6. Aluminium double pipe heat exchanger, Counter flow with
½ hot and ½ cold
7. Cooper double pipe heat exchanger, Counter flow with 1/2 hot and 1/2 cold
8. Draw the temperature contour at the cold outlet, hot outlet, and whole domain for all cases and discuss your results.
9. Plot the temperature profile along a selected line from inlet to outlet for all cases and discuss.
10. Plot the pressure contour and calculate the pressure drop at outlet of the domain.
11. Plot the vector profile and discuss.
12. Calculate the heat transfer coefficients.
13. Calculate the Nusselt number from the following correlation and discuss;
14. Connect your results with the existing literature.
Attachment:- Advanced Flow Modelling.rar
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