ANSYSTurboGrid練習(xí)1中文

1、version 1.13/23/2007 2007 ansys, inc. all rights reserved.inventory #000000w1-1tg11.0ansys, inc. proprietaryansys turbogrid 11.0練習(xí)1軸流渦輪轉(zhuǎn)子version 1.13/23/2007 2007 ansys, inc. all rights reserved.inventory #000000w1-2tg11.0ansys, inc. proprietary軸流渦輪轉(zhuǎn)子 軸流渦輪轉(zhuǎn)子 葉片數(shù): 83 旋轉(zhuǎn)軸: zversion 1.13/23/2007 2007 a

2、nsys, inc. all rights reserved.inventory #000000w1-3tg11.0ansys, inc. proprietary在 ansys workbench 平臺(tái)啟動(dòng)turbogrid打開(kāi) ansys workbench 啟動(dòng)頁(yè)點(diǎn)擊turbogridversion 1.13/23/2007 2007 ansys, inc. all rights reserved.inventory #000000w1-4tg11.0ansys, inc. proprietary 在 turbogrid中創(chuàng)建網(wǎng)格幾何拓?fù)渚W(wǎng)格數(shù)據(jù)分析和優(yōu)化version 1.13/23/2

3、007 2007 ansys, inc. all rights reserved.inventory #000000w1-5tg11.0ansys, inc. proprietary從 blademodeller中導(dǎo)出幾何 從blademodeller中導(dǎo)出幾何: file export to turbogrid input files 創(chuàng)建如下文件: - axial_turbine_rotor.inf - axial_turbine_rotor_hub.curve - axial_turbine_rotor_shroud.curve - axial_turbine_rotor_profile

4、.curve 這一系列文件構(gòu)成turbogrid輸入文件version 1.13/23/2007 2007 ansys, inc. all rights reserved.inventory #000000w1-6tg11.0ansys, inc. proprietarybladegen 信息文件 != cfx-bladegen export = axis of rotation: z number of blade sets: 83 number of blades per set: 1 geometry units: mm blade 0 le: ellipseend blade 0 te

5、: ellipseend hub data file: axial_turbine_rotor_hub.curve shroud data file: axial_turbine_rotor_shroud.curve profile data file: axial_turbine_rotor_profile.curveversion 1.13/23/2007 2007 ansys, inc. all rights reserved.inventory #000000w1-7tg11.0ansys, inc. proprietary導(dǎo)入幾何 - bladegen 信息文件加載bladegen以

6、開(kāi)始一個(gè)新的工程: file load bladegen選擇bladegen信息文件: axial_turbine_rotor.inf 點(diǎn)擊“open”version 1.13/23/2007 2007 ansys, inc. all rights reserved.inventory #000000w1-8tg11.0ansys, inc. proprietary導(dǎo)入的幾何 只顯示一個(gè)葉片流道 轂藍(lán)色顯示 罩灰色顯示 葉片導(dǎo)緣綠色顯示 葉片尾緣紅色顯示 大的藍(lán)-紅箭頭代表r-a (radial-axial) 坐標(biāo)系 在對(duì)象樹(shù)中激活“machine data”時(shí)可見(jiàn)version 1.13/2

7、3/2007 2007 ansys, inc. all rights reserved.inventory #000000w1-9tg11.0ansys, inc. proprietarymachine data輸入(如果需要)萬(wàn)一bladegen信息文件不可用，必須修改machine data 默認(rèn)的葉片組數(shù)目2必須改為正確的數(shù)目83默認(rèn)的旋轉(zhuǎn)主軸z不必修改基本單位保持cm1.點(diǎn)擊“apply”version 1.13/23/2007 2007 ansys, inc. all rights reserved.inventory #000000w1-10tg11.0ansys, inc. pr

8、oprietary曲線(xiàn)數(shù)據(jù)確認(rèn)檢查詳情:轂罩葉片-文件名-曲線(xiàn)類(lèi)型分段線(xiàn)性或b樣條-導(dǎo)緣和尾緣的定義“cut-off”或 “square”點(diǎn)擊“apply”version 1.13/23/2007 2007 ansys, inc. all rights reserved.inventory #000000w1-11tg11.0ansys, inc. proprietary拓?fù)溥x擇在對(duì)象樹(shù)下選擇“topology set”拓?fù)浞椒ㄔO(shè)為 h/j/c/l grid選擇包含o-grid： width factor = 0.3設(shè)置1:1周期性 periodic = full點(diǎn)擊“apply”versio

9、n 1.13/23/2007 2007 ansys, inc. all rights reserved.inventory #000000w1-12tg11.0ansys, inc. proprietary拓?fù)湓斍橹魍負(fù)溲蠹t顯示拓?fù)鋲K在轂和罩層上黃色顯示通過(guò)在對(duì)象樹(shù)中雙擊給定層并打開(kāi)拓?fù)淇梢暬梢约せ钸@些塊初始粗糙網(wǎng)格在轂和罩上以棕色顯示.初始粗糙網(wǎng)格的估計(jì)數(shù)量顯示在窗口底部的狀態(tài)條中 total nodes = 29150推薦凍結(jié)拓?fù)湟苑乐篃o(wú)意中在高級(jí)參數(shù)標(biāo)簽中改變了設(shè)置1.點(diǎn)擊“freeze”按鈕version 1.13/23/2007 2007 ansys, inc. all right

10、s reserved.inventory #000000w1-13tg11.0ansys, inc. proprietary自動(dòng)添加層需要多個(gè)層來(lái)捕捉葉片形狀從轂到罩的改變.默認(rèn)情況下,當(dāng)生成網(wǎng)格時(shí)，如果有必要將會(huì)自動(dòng)添加層.1.為了演示, 編輯layers并點(diǎn)擊“auto-add layers”. turbogrid在給定的拓?fù)湎聞?chuàng)建出兩個(gè)附件層. 在生成網(wǎng)格時(shí)，自動(dòng)添加的新層和現(xiàn)已創(chuàng)建的層相同. auto-addversion 1.13/23/2007 2007 ansys, inc. all rights reserved.inventory #000000w1-14tg11.0ansy

11、s, inc. proprietary創(chuàng)建粗糙的網(wǎng)格對(duì)于給定的拓?fù)浜妥銐虻膶訑?shù)，一個(gè)粗糙的網(wǎng)格將會(huì)生成 (估計(jì)29150 節(jié)點(diǎn)).在視圖窗口右擊, 選擇create mesh在對(duì)象樹(shù)中取消blade 1的選擇1.在視圖中顯示一個(gè)常數(shù)k旋轉(zhuǎn)機(jī)械表面(接近翼展中間位置) ，此面列表在對(duì)象樹(shù)中的3dmesh show meshversion 1.13/23/2007 2007 ansys, inc. all rights reserved.inventory #000000w1-15tg11.0ansys, inc. proprietary分析網(wǎng)格在對(duì)象樹(shù)中擴(kuò)展“mesh analysis” ，雙擊

12、“mesh statistics”在“mesh statistics ”窗口中特殊網(wǎng)格參數(shù)紅色文本表示不滿(mǎn)足“mesh limits”所定義的網(wǎng)格限制.雙擊“minimum face angle” 看到紅色顯示的此參數(shù)同一類(lèi)型的分布version 1.13/23/2007 2007 ansys, inc. all rights reserved.inventory #000000w1-16tg11.0ansys, inc. proprietary網(wǎng)格限制 顯示在“mesh statistics ”窗口的網(wǎng)格參數(shù)值是基于左圖示的“mesh limits ”. 內(nèi)置體對(duì)象 : mesh analy

13、sis show limits 也能夠用于看不滿(mǎn)足準(zhǔn)則的網(wǎng)格參數(shù)位置 (等值圖)version 1.13/23/2007 2007 ansys, inc. all rights reserved.inventory #000000w1-17tg11.0ansys, inc. proprietary修改轂/罩層“minimum face angle”等值圖顯示臨界的區(qū)域位于轂上的導(dǎo)緣附近 我們通過(guò)移動(dòng)轂層上的主控制點(diǎn)來(lái)改善網(wǎng)格的扭曲度.關(guān)閉“mesh statistics”窗口.1.關(guān)掉對(duì)象樹(shù)中除轂層以外的所有對(duì)象的可視化version 1.13/23/2007 2007 ansys, inc.

14、 all rights reserved.inventory #000000w1-18tg11.0ansys, inc. proprietary修改轂層雙擊: layers hub關(guān)閉“visibility of refined mesh visibility”和“ master topology visibility”點(diǎn)擊“ apply”放大layer-hub區(qū)域按下 +并拉動(dòng)圖中箭頭所示的主控制點(diǎn)#3.同樣的方法拉動(dòng) #11 提示提示: 想看控制點(diǎn)號(hào),右鍵控制點(diǎn).#3#11version 1.13/23/2007 2007 ansys, inc. all rights reserved.i

15、nventory #000000w1-19tg11.0ansys, inc. proprietary修改轂層 修改后,轂上主控制點(diǎn)定位到如圖所示.version 1.13/23/2007 2007 ansys, inc. all rights reserved.inventory #000000w1-20tg11.0ansys, inc. proprietary重新生成網(wǎng)格用編輯后的拓?fù)渲匦律删W(wǎng)格.在視圖窗口右鍵選擇“create mesh”在對(duì)象樹(shù)中雙擊“mesh statistics”“minimum face angle”得到改善. 1.提高網(wǎng)格密度后，“maximum element

16、 volume ratio”和“edge length ratio”也將會(huì)得到提高. version 1.13/23/2007 2007 ansys, inc. all rights reserved.inventory #000000w1-21tg11.0ansys, inc. proprietary提高網(wǎng)格密度雙擊“ mesh data”在“mesh size”標(biāo)簽, 選擇“target passage nodes”方法節(jié)點(diǎn)數(shù)設(shè)為: medium (100000) 使用編輯后的拓?fù)渲匦聞?chuàng)建網(wǎng)格.點(diǎn)擊“apply”右鍵視圖選擇“ create mesh”version 1.13/23/200

17、7 2007 ansys, inc. all rights reserved.inventory #000000w1-22tg11.0ansys, inc. proprietary創(chuàng)建網(wǎng)格密度在對(duì)象樹(shù)中雙擊“mesh statistics”“maximum element volume ratio”得到改善應(yīng)用更高的網(wǎng)格密度可以實(shí)現(xiàn)更高的網(wǎng)格質(zhì)量較差的“face angle”區(qū)域現(xiàn)在處于罩層附近. 這可以通過(guò)移動(dòng)罩上的 控制點(diǎn)得到改善.version 1.13/23/2007 2007 ansys, inc. all rights reserved.inventory #000000w1-23

18、tg11.0ansys, inc. proprietary修改罩層雙擊layers shroud關(guān)閉“refined mesh visibility”和“master topology visibility”點(diǎn)擊“ apply”放大 layer-hub按下 +并沿箭頭方向拉動(dòng)主控制點(diǎn) #11.同理拉動(dòng)控制點(diǎn)#12 #12#11version 1.13/23/2007 2007 ansys, inc. all rights reserved.inventory #000000w1-24tg11.0ansys, inc. proprietary修改罩層 修改后,轂上的控制點(diǎn)定位到如圖所示.vers

19、ion 1.13/23/2007 2007 ansys, inc. all rights reserved.inventory #000000w1-25tg11.0ansys, inc. proprietary再次生成網(wǎng)格用編輯后的拓?fù)湓俅紊删W(wǎng)格右鍵視圖窗口選擇“create mesh”在對(duì)象樹(shù)中雙擊“mesh statistics”1.如果“minimum/maximum face angle”沒(méi)有提高到0%壞質(zhì)量,則繼續(xù)在罩層上移動(dòng)控制點(diǎn)以繼續(xù)提高網(wǎng)格質(zhì)量.version 1.13/23/2007 2007 ansys, inc. all rights reserved.inventory #000000w1-26tg11.0ansys, inc. proprietary創(chuàng)建網(wǎng)格質(zhì)量圖擴(kuò)展“3d mesh”激活“show mesh”并編輯它.在“geometry”標(biāo)簽, 選擇變量= k 值= 36, 相應(yīng)于翼展中部位置點(diǎn)擊“colour”標(biāo)簽設(shè)置“mode”為“variable”; 設(shè)置“variable”到“ minimum face angle”設(shè)置“range”到“global”點(diǎn)擊“apply”version 1.13/23/2007 2007 ansys, inc. all rights r