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A hydrodynamic prediction model of throttle orifice plate using space filling and adaptive sampling method

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Abstract

The hydrodynamic prediction model improved design efficiency of the flow control application. A global sampling process with space filling method, adaptive sampling method, and neural network is proposed to generate a hydrodynamic prediction model for the flow control device. The optimized Latin hypercube sampling method is applied to create a uniform set of initial sample points for analysis. An automatic computational fluid dynamics analysis process is developed to provide data for the hydrodynamic objective of the multi-stage throttle orifice plate. By self-learning from previous sample points, the new sample points placed in the region of interest are collected by the adaptive sampling method in several iterations. Two numerical examples and the flow rate modeling for the throttle orifice plate are provided to demonstrate the approximation capability of the proposed process. Ten prediction model cases are established by a back-propagation feed-forward neural network, and the test data show that the model constructed by optimized Latin hypercube sampling and adaptive sampling has 1% mean relative error and 4.85% maximum relative error, which is nearly 25% more accurate than the optimized Latin hypercube sampling model. The proposed global sampling process is efficient to build the hydrodynamic prediction model and shows potential in the flow control design area.

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Acknowledgments

Tang Tengfei wants to thank grandfather Tong for his invaluable support over the years. Stay strong Wuhan, stay strong China.

Funding

The financial support provided by the National Natural Science Foundation of China (grant no. 51705164, 51575199) is greatly appreciated.

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Correspondence to Longlong Gao.

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The authors declare that they have no conflict of interest.

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Responsible Editor: Palaniappan Ramu

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Replication of results

The results data in Table 4 is proposed in the supplementary data document in 11 sections, the original data from case 1 to 7b is presented in section 1 to 10, and the test data is presented in section 11. The equation transfer OLH data to geometry data is presented in Section 2.

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Tang, T., Yang, G., Zhang, D. et al. A hydrodynamic prediction model of throttle orifice plate using space filling and adaptive sampling method. Struct Multidisc Optim 62, 1563–1578 (2020). https://doi.org/10.1007/s00158-020-02564-w

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  • DOI: https://doi.org/10.1007/s00158-020-02564-w

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