Test Data AC7-03: Difference between revisions
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==Overview of Tests== | ==Overview of Tests== | ||
An experimental validation was performed for two operation points, the partial load (<math> Q=2.5~l/min </math>) and the nominal load (<math> Q=4.5~l/min </math>) at a rotational speed of <math> n=7,900~r/min </math>. The investigates VAD model was explained in section | An experimental validation was performed for two operation points, the partial load (<math> Q=2.5~l/min </math>) and the nominal load (<math> Q=4.5~l/min </math>) at a rotational speed of <math> n=7,900~r/min </math>. The investigates VAD model was explained in section [[AC 7-03 Test Data#Flow Geometr< |Table 2.1]]. This was originally created exclusively for numerical investigations. In order to enable an adequate validation of the simulated VAD flow, the following requirements were placed on the experimental model during conceptual design: | ||
* Due to the small dimensions and narrow gaps, the model to be manufactured must have tolerances in the range of <math> 10-20~\mu m </math>. | * Due to the small dimensions and narrow gaps, the model to be manufactured must have tolerances in the range of <math> 10-20~\mu m </math>. | ||
Revision as of 11:16, 10 June 2021
Turbulent Blood Flow in a Ventricular Assist Device
Application Challenge AC7-03 © copyright ERCOFTAC 2021
Test Data
Overview of Tests
An experimental validation was performed for two operation points, the partial load () and the nominal load () at a rotational speed of . The investigates VAD model was explained in section Table 2.1. This was originally created exclusively for numerical investigations. In order to enable an adequate validation of the simulated VAD flow, the following requirements were placed on the experimental model during conceptual design:
- Due to the small dimensions and narrow gaps, the model to be manufactured must have tolerances in the range of .
- In the numerical model, the VAD has no axial gaps between rotating and stationary components. The experimental model must therefore have as small as possible between these components.
- In the numerical model, a hydraulically smooth flow is assumed in the immediate vicinity of the wall. Also in the experimental model, a hydraulically smooth flow should be present at the walls.
- No mechanical drive for the impeller is considered in the numerical model. Since the experimental model requires a drive, it must be placed as free as possible from interference for the flow.
- It should be possible to measure various flow variables with the model to be produced. Thus, in the first measurement campaign, the goal is to determine the performance data, as pressure head and hydraulic efficiency. However, the model is also to be used in the future to optically measure velocities or turbulent quantities.
Description of Experiment
Boundary Data
Measurement Errors
Measured Data
References
Contributed by: B. Torner — University of Rostock, Germany
© copyright ERCOFTAC 2021