Computational Fluid Dynamics (CFD) is an important branch of fluid mechanics, and will continue to play great roles on the design of aerospace vehicles, explora- tion of new concept vehicles and new aerodynamic techno...Computational Fluid Dynamics (CFD) is an important branch of fluid mechanics, and will continue to play great roles on the design of aerospace vehicles, explora- tion of new concept vehicles and new aerodynamic technology. This paper will present the progress of CFD from point of view of engineering application in recent years at CARDC, including the software integration, grid technique, speeding up of convergence, unsteady fluid computation,etc., and also give some engineering application examples of CFD at CARDC.展开更多
文摘为探讨冠突散囊菌繁殖体提取物的抑菌性能,该文采用抑菌圈测定不同繁殖体提取物对金黄色葡萄球菌、藤黄微球菌、大肠杆菌、枯草芽孢杆菌、白色链霉菌和白色念珠菌的抑菌活性,并探讨抑菌物质在不同温度、p H值和紫外光下的稳定性。该研究采用玻璃珠振摇法破碎冠突散囊菌繁殖体,获得子囊果、子囊孢子和分生孢子提取物。结果表明,冠突散囊菌子囊果和子囊孢子提取物有抑菌作用,分生孢子提取物无抑菌作用。其中,对藤黄微球菌、金黄色葡萄球菌和大肠杆菌的抑制作用最显著,且该物质在25~80℃,p H 2~6能保持稳定的抑菌活性。冠突散囊菌有性繁殖体(子囊果和子囊孢子)中有抑菌物质,抑菌物质在一定的p H值和温度范围内具有良好的稳定性。
文摘Computational Fluid Dynamics (CFD) is an important branch of fluid mechanics, and will continue to play great roles on the design of aerospace vehicles, explora- tion of new concept vehicles and new aerodynamic technology. This paper will present the progress of CFD from point of view of engineering application in recent years at CARDC, including the software integration, grid technique, speeding up of convergence, unsteady fluid computation,etc., and also give some engineering application examples of CFD at CARDC.