Catalog of Regulatory Science Tools to Help Assess New Medical Devices
This regulatory science tool presents a dataset for validating computational fluid dynamic (CFD) simulation of blood flow through generalized medical device geometries.
Technical Description
The tool provides validation data (pressure and velocity field) obtained from inter-laboratory bench experiments within generic and simplified i) Nozzle and ii) Blood pump geometries.
Modelers can use the pressure and velocity validation data to perform early-stage validation of their computational fluid dynamics (CFD) model/software before performing any device-specific verification, validation, and credibility assessment.
The validation data was obtained using particle image velocimetry (PIV) at three independent laboratories, details of which are provided in Section 2.0 of Hariharan et al. [DOI: 10.1115/1.4003440]
We have provided full technical description of the test devices, flow conditions, fluid properties, access to CAD models, and the validation experimental data on Git Hub: Benchmark dataset for validating computational fluid dynamic (CFD) simulation of blood flow through FDA Nozzle and FDA blood pumpExternal Link Disclaimer to ensure that modelers use appropriate input parameters to mimic the experiments. Details about the flow conditions and fluid properties for the nozzle and pump geometries are also provided in section 2.0 and Methods section of Hariharan et al. 2009 [DOI: 10.1115/1.4003440] and Hariharan et al. 2018External Link Disclaimer [https://doi.org/10.1007/s13239-018-00378-y], respectively.
Intended Purpose
The benchmark dataset can be used as an early-stage validation of computational fluid dynamic (CFD) models simulating blood flow through blood contacting devices with geometry and flow features comparable to the benchmark nozzle and pump geometries. The early-stage validation is limited to velocity and pressure data within the benchmark geometries. Please note that additional device-specific verification and validation may be required to analyze the overall credibility of the CFD model.
Testing
This inter-laboratory generated benchmark dataset has been extensively used by academia, medical device industry, and third-party laboratories (see below) as a verification and validation tool.
List of organizations that used the benchmark geometry and/or dataset:
- ASME V&V 40 standard
- Livermore Software Technology
- Dassault Systèmes
- Ansys Inc.
- Pointwise
- Enmodes GmbH
- Veryst Systems
- Additional 23 Universities and Institutes spanning the globe
Links to technical articles published based on this tool (as of Dec 2021) are available on Git Hub: Benchmark dataset for validating computational fluid dynamic (CFD) simulation of blood flow through FDA Nozzle and FDA blood pumpExternal Link Disclaimer.
Limitations
Validation using this tool is limited to velocity and pressure data within the benchmark FDA nozzle and FDA blood pump geometries. Device-specific verification and validation will be required to analyze the overall credibility of the CFD model.
Supporting Documentation
Full technical description of the test devices, access to CAD models, test conditions, and experimental data are provided on Git Hub: Benchmark dataset for validating computational fluid dynamic (CFD) simulation of blood flow through FDA Nozzle and FDA blood pumpExternal Link Disclaimer.
Contact
Tool Reference
- In addition to citing relevant publications please reference the use of this tool using RST24CV11.01
Note: This tool was previously listed in the catalog as both “Use of the FDA Nozzle Model to Illustrate Validation Techniques in Computational Fluid Dynamics (CFD) Simulations” and the “Interlaboratory Characterization of the Velocity Flow Field in the FDA Blood Pump Model Using Particle Image Velocimetry.”