scholarly journals Using recirculating flumes and a response surface model to investigate the role of hyporheic exchange and bacterial diversity on micropollutant half-lives

2019 ◽  
Vol 21 (12) ◽  
pp. 2093-2108 ◽  
Author(s):  
Anna Jaeger ◽  
Claudia Coll ◽  
Malte Posselt ◽  
Jonas Mechelke ◽  
Cyrus Rutere ◽  
...  
Keyword(s):  
Experimental Design ◽  
Response Surface ◽  
Bacterial Diversity ◽  
Response Surface Model ◽  
Hyporheic Exchange ◽  
Surface Model

A flume experimental design to test effects of hyporheic exchange and bacterial diversity on the fate of micropollutants in rivers.

Optimization Design of Pressure Shell in Underwater Vehicle Based on Response Surface Model

2009 ◽  
Vol 419-420 ◽  
pp. 89-92
Author(s):  
Zhuo Yi Yang ◽  
Yong Jie Pang ◽  
Zai Bai Qin
Keyword(s):  
Finite Element ◽  
Response Surface ◽  
Optimization Design ◽  
Engineering Application ◽  
Element Model ◽  
Response Surface Model ◽  
Design Stage ◽  
Surface Model ◽  
Design Variables ◽  
Structure Strength

Cylinder shell stiffened by rings is used commonly in submersibles, and structure strength should be verified in the initial design stage considering the thickness of the shell, the number of rings, the shape of ring section and so on. Based on the statistical techniques, a strategy for optimization design of pressure hull is proposed in this paper. Its central idea is that: firstly the design variables are chosen by referring criterion for structure strength, then the samples for analysis are created in the design space; secondly finite element models corresponding to the samples are built and analyzed; thirdly the approximations of these analysis are constructed using these samples and responses obtained by finite element model; finally optimization design result is obtained using response surface model. The result shows that this method that can improve the efficiency and achieve optimal intention has valuable reference information for engineering application.

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