Proposal and verification of optical flow reformulation based on variational method for skin-friction-stress field estimation from unsteady oil film distribution

Proposal and verification of optical flow reformulation based on variational method for skin-friction-stress field estimation from unsteady oil film distribution
复制标题

基于变分法的光流重构的提出和验证用于非稳态油膜分布的皮肤摩擦应力场估计

DOI:
10.1007/s12650-021-00794-8
复制
发表时间:
2021
影响因子:
1.7
通讯作者:
Asai Keisuke
Asai Keisuke
中科院分区:
计算机科学4区
文献类型:
--
作者:
Endo Kanta;Ambo Takumi;Saito Yuji;Nonomura Taku;Chen Lin;Asai Keisuke

文献摘要

参考文献

被引文献

相似文献

摘要在变分方法的基础上,对非定常油膜表面摩擦应力估算的光流法进行了改进,并与传统方法进行了比较,验证了该方法的有效性。在该方法中,正则化被直接添加到表面摩擦应力场中,而在传统方法中,正则化被添加到油量中。结果表明,该方法可以通过调整正则化参数来控制表面摩擦应力场的光滑度,而常规方法难以实现。通过数值和实验数据对该方法的性能进行了评估,结果表明该方法优于已有方法。
AbstractIn this study, the optical flow method for the skin-friction-stress estimation from the unsteady oil film distribution was reformulated based on the variational method, and the validity of the proposed method was verified in comparison with the conventional method. The regularization is proposed to be added directly to the skin-friction-stress field in the proposed method while the regularization is added to the amount of oil movement in the conventional method. As a result, the smoothness of the skin-friction-stress field can be controlled by adjusting the regularization parameter in the proposed method whereas it was difficult in the conventional method. The performance of the proposed method was evaluated to be superior to the previous method through the numerical and experimental data.Graphic Abstract
DOI: 10.1007/s00348-020-03101-7
发表时间: 2021
影响因子: 2.4
作者:
Yokota Sho;Ochiai Taku;Ozawa Yuta;Nonomura Taku;Asai Keisuke
通讯作者: Asai Keisuke
DOI: 10.1103/physrevfluids.6.054704
发表时间: 2021
影响因子: 2.7
作者:
Masahide Kuwata;Yoshiaki Abe;Sho Yokota;Taku Nonomura;Hideo Sawada;Aiko Yakeno;Keisuke Asai;Shigeru Obayashi
通讯作者: Shigeru Obayashi
面向后的步骤后发光微型簇的流动可视化和瞬态行为分析
DOI: 10.1016/j.flowmeasinst.2019.101657
发表时间: 2020
影响因子: 2.2
作者:
Lin Chen;Tomohiro Suzuki;T. Nonomura;K. Asai
通讯作者: K. Asai
DOI: --
发表时间: 2019
期刊:
影响因子: --
作者:
S. Yokota ;T. Nonomura;K. Asai
通讯作者: K. Asai
传统应用和生物医学流程的壁剪应力测量(邀请)
DOI: --
发表时间: 2004
期刊:
影响因子: --
作者:
M. Plesniak;S. Peterson
通讯作者: S. Peterson