adaptive cartesian grid based on an omni-tree 基于復(fù)合叉樹(shù)的自適應(yīng)笛卡爾網(wǎng)格應(yīng)用研究
solution-based grid adaptations are carried out, and efficiently capturing flow features . 5 . coupled with the cartesian grids, a store separation for wing / store configuration is studied 6.對(duì)于二維多段翼型繞流,利用混合網(wǎng)格完成了navier一stokes方程的數(shù)值模擬。
compared to similar methods on cartesian grids, the same accuracy is obtained with a lot fewer grid points, which means that considerable savings in computer memory can be obtained 曲網(wǎng)格偽譜法用較少的網(wǎng)格數(shù)可以獲得與直網(wǎng)格偽譜法相同的精度,從而節(jié)省了計(jì)算機(jī)內(nèi)存,這一點(diǎn)對(duì)于三維地震模型的計(jì)算具有重要意義。
this fact has an important implication for extension to 3d configurations . comparing the synthetic seismogram by using cartesian grids with the synthetic seismogram by using the curved grid, it can prove the approach is effective 通過(guò)聲波模型和彈性波模型在直網(wǎng)格下的合成記錄與在曲網(wǎng)格下的合成記錄的比較驗(yàn)證了方法的有效性與精確性。
data quality control including sidelobe contamination, data's filling and smoothing, nyquist velocity of bistatic doppler radar, interpolation of velocities from a polar grid to a cartesian grid and problems found during simulating data and solusion to them 介紹了數(shù)據(jù)質(zhì)量控制,包括旁瓣污染、資料的填補(bǔ)與平滑、雙基地最大不模糊速度、從極坐標(biāo)到直角坐標(biāo)的轉(zhuǎn)換以及在模擬風(fēng)場(chǎng)過(guò)程中發(fā)現(xiàn)的問(wèn)題和解決辦法。