| Unit code | MME506A | ||
| Unit name | Advanced Fluid Dynamics | ||
| Assessment # | 2 | ||
| Paper # | A | ||
| Version # | 1 | ||
| Created by | Vijay Kumar Veera | Date | 15 Aug 2024 |
| Reviewed by | Mahadi Hasan Masud | Date | 16 Aug 2024 |
E.g. ME501_Assessment3_SteveMackay_01Aug2019
Important note: Failure to adhere to the above may result in academic penalties. Please refer to the unit outline or EIT Policies and Procedures for further information.
Please complete your answers on the assessment cover page document available on Moodle.
Clearly label your question numbers (there is no need to copy the full question over). Include all working out.
Generate a computational domain, state the governing equations and boundary conditions, generate the grid, and calculate stationary laminar flow of air (𝜌 = 1 kg/m3, 𝜇 = 1 × 10−5 𝑃𝑎 ∙ 𝑠) over a spinning circular cylinder (figure below). Inlet velocity is 10 m/s, rotational speed of the cylinder is 100 rad/s, and the diameter of cylinder is 0.1m.
In which direction is the side force on the body, up or down? Explain. Plot streamlines in the flow. Where is the upstream stagnation point?
Figure 1: Physical problem for flow around a rotating cylinder. Source: Y. Çengel, J. Cimbala, Fluid Mechanics. 4th ed. New York, N.Y: McGraw Hill Education, 2018
Ensure your CFD analysis report has the following key sections:
your assessment marks will be zero.
Demonstration Grading Rubric
| Presenter name: | ||
| Assessment Criteria | Out of: | Score: |
| Contents/Objectives | 1 | |
| Bullet points - not sentences | 1 | |
| Diagramsand tables (Visible size, Labelling) | 1 | |
| Slide Quality (slide numbering, visible font size) | 1 | |
| No spelling/grammar mistakes | 1 | |
| Clear information and explanation | 3 | |
| Voice modulation - not monotone | 1 | |
| Time management – completes withingiven timeframe | 1 | |
| Total: | 10 |
Marking rubric overleaf
| Assessment Criteria | High Distinction (85- 100%) | Distinction (75-84%) | Credit (65-74%) | Pass (50-64%) | Fail (0-49%) |
Geometry Creation (5marks) | Clearly presents steps taken to generate the fluid domain for the problem. Highlights the challenges facedand explains how these were overcome using best practices discussed in the tutorials. Exhibits clarity, complexity, perceptiveness, originality, and depth of thought about the topic. | Clearly presents steps taken to generate the fluid domainfor the problem. Highlights thechallenges faced butfails to explain how these were overcome using best practices in one of the instances. Exhibits clarity, and some depth about the analysis of the standard, but lacks the qualities ofcomplexity, perceptiveness, and originality exhibited in level A. | Fails to Clearly presentsteps taken to generate the fluid domain for the problem. Highlights thechallenges faced butfails to explain how these were overcome using best practices in more thanone of the instances. Exhibits some clarity, thoughonly minimal depth of thoughtabout the topic. | Does not clearly document the steps takento generate the fluid domainfor the problem. Does not highlight the challenges faced and fails to explain how these were overcome using best practices in most of the instances. Exhibit some faulty logic, and/or stereotypical or superficial thinking about the topic. | Does not document thesteps taken to generate the fluid domain for the problem. Does not highlight the challenges faced and fails to provide anyexplanation how these were overcome using best practices in any of the instances. Exhibit little or no evidence of effective thinking aboutthe topic |
Mesh generation (5marks) | Clearly presents steps taken to generate the computational mesh for the problem. Creates a mesh that captures the key regions of interest in the computational domain. Provides a clear explanation on how mesh sizings were chosen according to best practices. Incorporates bodies of influence to limit growth of cells in regions of interest. Provides clear, easy to understand pictures of the mesh. | Clearly presents steps taken to generate the computational mesh for theproblem. Creates a mesh that fails to capture the key regions of interest in the computational domain. Provides a clear explanation on how mesh sizings were chosen according to best practices. Does not incorporate bodies of influence to limit growth of cells in regions of interest. Fails to provide clear easy to understand snapshots of the mesh in one of the key regions. | Fails to Clearly presentsteps taken to generate the computational mesh for the problem. Creates a mesh that fails to capture more than one key regions of interest in the computational domain. Fails to provide a clear explanation on how mesh sizings were chosen according to best practices. Does not incorporate bodies of influence to limit growth of cells in regions of interest. Fails to provide clear easy to understand snapshots of the mesh in more than one of the key regions. | Does not clearly document the steps taken to generate the computational mesh for the problem. Creates a mesh that fails to capture all the key regions of interest in the computational domain. Fails to provide a clear explanation on how meshsizings were chosen according to best practices. Does not include key features suchas inflation layers and bodies of influence. Fails to provide clear easy to understand snapshots of the mesh in more than one of the key regions. | Does not document thesteps taken to generate the computational mesh for the problem. Does not create a mesh for the computational domain and fails to provide a clear explanation on how mesh sizingswere chosen according to best practices. Does not include key features such as inflation layers and bodies of influence. Fails to provide clear easy to understand snapshots of the meshin more than one of the keyregions. Exhibit littleor no evidence of effective thinking about the topic. |
Case Setup; Boundary Conditions; Solver settings (15 marks) | Provides screenshots showing all the physical models used to set up the CFD case according to best practices. Provides explanation on justification for choosing these models by quoting relevant literature. Provides screenshots showing the boundary conditions specified in the simulation. Shows screenshots showing the solver settings used to run the simulations. Justifies these settings based on relevant documentation from the help manual. | Provides screenshots showing most of the physical models used to set up the CFD caseaccording to best practices. Provides explanation on justification for choosing these models by quoting relevant literature. Provides screenshots showing most of the boundary conditions specified in the simulation. Shows screenshots showing most of the solver settings used to run the simulations. Justifies these settings based on relevant documentation from the help manual. | Provides screenshots showing most of the physical models used to set up the CFD caseaccording to best practices. Fails to provide explanation on justification for choosing these models by quoting relevant literature. Provides screenshots showing most of the boundary conditions specified in the simulation. Shows screenshots showing most of the solver settings used to run the simulations. Fails to provide justifications on the usage of these settings based on relevant documentation from the help manual. | Fails to provide screenshots showing most of the physical models used to set up the CFD case according to best practices. Fails to provide explanation on justification for choosing these models by quoting relevant literature. Fails to provide screenshots showing mostof the boundary conditions specified in thesimulation. Fails to show screenshots showing most of the solver settings used to run the simulations. Fails to provide justifications on the usage of thesesettings based on relevant documentation from the help manual. | Does not provide any information on the models used to set up the case.Fails to show the boundary conditions used in the CFD model. Does not clarify the solver settings used in the simulation. Exhibits little or no evidence of effective thinking about the topic. |
Post processing (10 marks) | Provides clear, concise and high-definition imagesshowing the important fluid dynamic processes within the computational domain. Provides an accurate, physics- based explanation on the origin of these fluid dynamic processes and provides linksto relevant documentation to corroborate the analysis. Exhibits clarity, complexity, perceptiveness, originality, and depth of thought about the topic. | Provides clear, concise images showing the important fluid dynamic processes within the computational domain. One or two images may be lacking resolution or clarity in highlighting the key processes. Provides a plausible explanation on the origin of the dominant fluid dynamic processes. Fails to provide links to relevant documentation to corroborate the analysis. Exhibits clarity, and some depth about the analysis of the standard, but lacks the qualities ofcomplexity, perceptiveness, and originality exhibited in level A. | Fails to provide clear, concise images showing the important fluid dynamic processes within thecomputational domain. Some of the images may be lacking resolution or clarity in highlighting the key processes. Provides an explanation on the origin of the dominant fluid dynamic processes without explaining the physical reasoning driving them. Fails to ratify the processes usingphysical principles. Fails to provide links to relevant documentation to corroborate the analysis. Exhibits some clarity, thoughonly minimal depth of thought about the topic. | Fails to provide clear, concise images showing most of the important fluid dynamic processes within the computational domain. Majority of images may be lacking resolution or clarity in highlighting the key processes. Fails to provide an explanation on the origin of the dominant fluid dynamic processes. Fails to explainthe physical reasoning driving them. Fails to ratify the processes using physical principles. Fails to provide links to relevant documentation to corroborate the analysis. Exhibit some faulty logic, and/or stereotypical or superficial thinking about the topic. | Does not provide any pictures showing the fluid dynamic processes within the computational domain. Exhibits little or no evidence of effective thinking about the topic. |
Mesh independence study (5 marks) | Creates a table to show the simulation conducted for various mesh resolutions. Compares the key observable quantities (Forces and pressure drop) for various mesh resolutions to identify the mesh resolution (via mesh settings) needed to arrive at a meshindependent solution. | Creates a table to show the simulation conducted for various mesh resolutions. Fails to compare all the key observable quantities (Forces and pressure drop) for various mesh resolutions to identify the mesh resolution needed to arrive at a mesh independent solution. | Fails to create a table to show the simulation conducted for various mesh resolutions. Fails to compare all the key observable quantities (Forces and pressure drop) for various mesh resolutions. Does not clearly identify the mesh resolution (via mesh settings) required to arrive at a mesh independent solution. | Provides a rudimentary explanation on mesh independence study. Does not provide sufficient information on the various mesh resolutions used to arrive at the mesh independent solution. Fails to specify the mesh resolution required to arrive at mesh independent solution. | Has no mention of a section on mesh independence studyin the report. Exhibits little or no evidence of effective thinking about the topic. |
Master of Engineering (Mechanical)
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