The compressibility effects on the inherent stability of Wing-In-Ground crafts

A three-dimensional inviscid flow analysis in the combined scroll-nozzle system of a radial inflow turbine is presented. The coupling of the two turbine components leads to a geometrically complicated, multiply-connected flow domain. Nevertheless, this coupling accounts for the mutual effects of both elements on the three-dimensional flow pattern throughout the entire system. Compressibility effects are treated for an accurate prediction of the nozzle performance. Different geometrical configurations of both the scroll passage and the nozzle region are investigated for optimum performance. The results corresponding to a sample scroll-nozzle configuration are verified by experimental measurements.

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Compressibility Effects on Cavitation in High Speed Liquid Flow : 2st Report, Transonic and Supersonic Liquid Flows

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B ◽

10.1299/kikaib.47.613 ◽

1981 ◽

Vol 47 (416) ◽

pp. 613-613

Author(s):

Omar Fraruque / KHAN

Keyword(s):

Liquid Flow ◽

High Speed ◽

Liquid Flows ◽

Compressibility Effects

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AN EFFICIENT APPROACH FOR THE THREE-DIMENSIONAL CONTAINER PACKING PROBLEM WITH PRACTICAL CONSTRAINTS

Asia Pacific Journal of Operational Research ◽

10.1142/s0217595904000254 ◽

2004 ◽

Vol 21 (03) ◽

pp. 279-295 ◽

Cited By ~ 26

Author(s):

ZHIHONG JIN ◽

KATSUHISA OHNO ◽

JIALI DU

Keyword(s):

Three Dimensional ◽

Real Life ◽

Packing Problem ◽

Utilization Rate ◽

Benchmark Problems ◽

Rectangular Container ◽

Efficient Packing ◽

High Degree ◽

Practical Constraints ◽

Inherent Stability

This paper deals with the three-dimensional container packing problem (3DCPP), which is to pack a number of items orthogonally onto a rectangular container so that the utilization rate of the container space or the total value of loaded items is maximized. Besides the above objectives, some other practical constraints, such as loading stability, the rotation of items around the height axis, and the fixed loading (unloading) orders, must be considered for the real-life 3DCPP. In this paper, a sub-volume based simulated annealing meta-heuristic algorithm is proposed, which aims at generating flexible and efficient packing patterns and providing a high degree of inherent stability at the same time. Computational experiments on benchmark problems show its efficiency.

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