计算流体力学-基于python语言的方腔驱动程序，附带PDF进行解释说明

基于c语言的方腔驱动程序

基于MATLAB方腔驱动编程程序

边界条件： 在所有方面 v=0。 u=0 右侧、左侧和底部，u=顶部 BC 的盖子速度 数值方法： 用于解决速度-压力耦合的SIMPLE算法。 u 和 v 的交错网格。要了解索引如何在交错网格中工作，请查看“Versteeg, Malalasekera：计算流体动力学简介”教科书。 控制方程的离散化基于这本教科书。 u 和 v 在每次迭代中通过 Jacobi 方法更新。 在每次迭代中使用五对角矩阵算法直接求解压力校正方程。 Proper choice of under-relaxation factors needed for convergence. 雅可比方法是解决此类问题效率最低的方法，但它简单易行。 鼓励您应用其他迭代方法，例如逐行 TDMA、Guess-seidel、多重网格或 SOR，以加快收敛速度​​。 压力修正： 我经常看到人们在解决 SIMPLE 算法中的压力校

格子玻尔兹曼方法（LBM）模拟顶盖驱动流的C++源代码，采用二维九速（D2Q9）模型，边界条件采用非平衡外推法，可以很好地得到模拟结果，在此代码基础上稍作修改，也可以模拟其他常见的流动问题。

C++格子波尔兹曼法模拟方腔内流动，flowdomain的步骤部分

1.7-μm thulium fiber laser with all-fiber ring cavity.pdf

A passively Q-switched side-pumped laser with folded resonator is specially constructed for singlelongitudinal-mode smooth pulse output. Nd:YAG is chosen as the laser active medium and Cr⁴⁺:YAG as the saturable absorber medium. Additionally, the method of frequency selection by grating with 1200 line/mm and Fabry-Perot (F-P) etalon is used in the twisted-mode cavity. The single-frequency smooth pulses are produced with 10-Hz repetition rate, 20-ns pulse width, and 1.064-\m

We demonstrate a multiple wavelength Brillouin/erbium fiber laser in a linear cavity configuration. The laser cavity is made up of a fiber loop mirror on one end of the resonator and a virtual mirror generated from the distributed stimulated Brillouin scattering effect on the other end. Due to the weak reflectivity provided by the virtual mirror, self-lasing cavity modes are completely suppressed from the laser cavity. At Brillouin pump and 1480-nm pump powers of 2 and 130 mW, respectively, 11 c

A surface plasmon resonance (SPR) sensing system based on the optical cavity enhanced detection technique is experimentally demonstrated. A fiber-optic laser cavity is built with a SPR sensor inside. By measuring the laser output power when the cavity is biased near the threshold point, the sensitivity, defined as the dependence of the output optical intensity on the sample variations, can be increased by about one order of magnitude compared to that of the SPR sensor alone under the intensity i