传感器与微系统
傳感器與微繫統
전감기여미계통
TRANSDUCER AND MICROSYSTEM TECHNOLOGY
2015年
8期
26-28
,共3页
郭素娜%孙立军%杨振%张涛
郭素娜%孫立軍%楊振%張濤
곽소나%손립군%양진%장도
切向涡轮流量传感器%计算流体动力学仿真%结构优化
切嚮渦輪流量傳感器%計算流體動力學倣真%結構優化
절향와륜류량전감기%계산류체동역학방진%결구우화
tangential turbine flow sensor%computational fluid dynamics( CFD)simulation%structure optimiza-tion
为降低切向涡轮流量计的测量下限,以25 mm口径机械式热量表为例,利用计算流体动力学( CFD)仿真软件对传感器内部三维流场进行研究,提出了提高传感器性能的10种结构改进方案,并通过CFD仿真对优化后的传感器性能进行预测,选择出最佳方案。结果表明:结构参数改进后,测量下限由0.07 m3/h降为0.035 m3/h。
為降低切嚮渦輪流量計的測量下限,以25 mm口徑機械式熱量錶為例,利用計算流體動力學( CFD)倣真軟件對傳感器內部三維流場進行研究,提齣瞭提高傳感器性能的10種結構改進方案,併通過CFD倣真對優化後的傳感器性能進行預測,選擇齣最佳方案。結果錶明:結構參數改進後,測量下限由0.07 m3/h降為0.035 m3/h。
위강저절향와륜류량계적측량하한,이25 mm구경궤계식열량표위례,이용계산류체동역학( CFD)방진연건대전감기내부삼유류장진행연구,제출료제고전감기성능적10충결구개진방안,병통과CFD방진대우화후적전감기성능진행예측,선택출최가방안。결과표명:결구삼수개진후,측량하한유0.07 m3/h강위0.035 m3/h。
In order to minimize the minimum measurable flow rate,tangential turbine flowmeter in heat meter with diameter 25 mm is taken as an example,computational fluid dynamics( CFD )simulation software is adopted to research three-dimensional flow field in sensor,ten kinds of improved schemes are presented to improve performance of sensor. The best scheme is selected according to prediction of the optimized sensor performance using CFD simulation. The results indicate that the minimum measurable flow rate changes from 0. 07 m3/h to 0. 035 m3/h.