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4 results on '"Huang, J.R."'

1. Effect of curvature in the numerical simulation of an electrothermal de-icer pad

Author

Huang, J.R., Keith, Theo G., Jr., and Witt, Kenneth J. de

Subjects
Airplanes -- Research, Heat -- Conduction, Finite element method -- Usage, Aerospace and defense industries, Business, Science and technology
Abstract

Application of a finite element method that involves an assumed phase state technique helps solve the one- and two-dimensional heat conduction problems in aircraft. The method also helps analyze the impact of surface curvature on the numerical data and simulate the electrothermal de-icer aircraft surface. Curvature effects are negligible when the surface curvature has a less than 0.25 value.

Published
1995

2. Efficient finite element method for aircraft deicing problems

Author

Huang, J.R., Keith, Theo G., and De Witt, Kenneth J.

Subjects
Finite element method -- Usage, Airplanes -- Ice prevention, Algorithms -- Usage, Aerospace and defense industries, Business, Science and technology
Abstract

A mathematical temperature based finite element method (FEM) with assumed states is used to solve aircraft deicing problems. The resulting algorithm and formulation are more efficient than conventional FEM procedures, resulting in the use of less computer time. This enables the algorithm to be used for aircraft deicing problems which relate to phase change.

Published
1993

3. Spatio-temporal patterns of crab fisheries in the main bays of Guangdong Province, China

Author

Huang, J.R., Brown, C.L., and Yang, T.B.

Subjects
China, Crab fisheries, Spatial and temporal distribution, Fisheries, Bays of Guangdong Province, Biology
Abstract

Using a semi-balloon otter trawl, crab fisheries in the main bays of Guangdong Province, China, were carried out seasonally . A total of 70 species were found, all belonging to the South China Sea Faunal sub region in the tropical India-West-Pacific Faunal Region. The clustering and nMDS ordination analysis revealed the existence of three groups. Group 1 included Hailing Bay and four bays to its east where typical species were Portunus sanguinolentus, P. pelagicus and Charybdis feriatus. Group 2 included Shuidong Bay and Leizhou Bay where typical species were P. sanguinolentus, P. pelagicus and P. hastatoides. Group 3 was Liusha Bay where typical species were C. feriatus, C. vadorum and C. truncate. The spatial and temporal variations of crab fisheries were mainly associated with characteristics of the sediment, seasonal changes and their own biological characteristics, but not significantly with water depth, temperature, salinity, and the “mid-summer fishing moratorium” conservation measure.

Published
2011

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