matlab求导代码-openpiv-pressure:来自PIV的压力

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matlab求导代码来自PIV的压力 来自粒子图像测速(PIV)数据的压力是流体动力学的梦想。 由于流量是由速度矢量场(PIV的直接结果)和标量压力场(主要的未知部分)完全描述的,因此,如果我们有一种可靠的方法可以从PIV结果中提取压力,那么从字面上可以看出在我们生活的许多领域取得突破。 早在1999年,我们建议在单个平面中使用PIV数据,并将其应用于泊松方程的速度导数。 在精确的边界条件和高质量的PIV测量下,可以获得波动(!)和平均压力场。 参考 我们的原始博客文章: 该存储库中/ docs /下或此处或此处的已扫描会议手稿 如果您使用此代码和构想,请引用: Gurka R., Liberzon A., Hefetz D., Rubinstein D. and Shavit U., Computation of Pressure Distribution Using PIV Velocity Data, 3rd International Workshop on Particle Image Velocimetry, Santa Barbara, California, Septe
openpiv-pressure-master.zip
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  • Pressure from PIV URAPIV = OPEN SOURCE (Matlab or Python or C++) Particle Image Velocimetry (PIV)_files
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内容介绍
Pressure from PIV ================ Pressure from Particle Image Velocimetry (PIV) data is a sort of a dream of fluid dynamics. Since the flow is fully described by the vector field of velocity (the direct result of PIV) and the scalar field of pressure (the main unknown part), if we had a trustable method to extract pressure from PIV results, it would cause literally a breakthrough in many areas of our life. Back in 1999, we suggested to use PIV data in a single plane and apply to the derivatives of velocity the Poisson equation. Upon accurate boundary conditions and high quality PIV measurements it is possible to get the fluctuating (!) and the mean pressure fields. ### References * Our original blog post: http://urapiv.wordpress.com/projects/pressure/ * the scanned conference manuscript in this repository under /docs/ or here [PDF](http://urapiv.files.wordpress.com/2006/02/PIV_99_paper_OCR.pdf) or here [PDF](http://www.academia.edu/2760232/Computation_of_pressure_distribution_using_PIV_velocity_data) * If you use this code and the ideas, please cite: Gurka R., Liberzon A., Hefetz D., Rubinstein D. and Shavit U., Computation of Pressure Distribution Using PIV Velocity Data, 3rd International Workshop on Particle Image Velocimetry, Santa Barbara, California, September 16-18, 1999. ### Demo Starting from the data in the included test folders, e.g. imp_3 (imp is a shortcut for impinging jet experiment), you can get a vector field like this: matlab -nodesktop -nosplash -r 'test_piv_poisson' and the result of the mean pressure looks like this: ![Pressure field](test_piv_poisson.png)
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