"吃食堂"结构中的"食堂"不属于典型的受事宾语,黄正德等(Huang et al.2009:60-76)以非标准题元结构来解释"吃食堂"结构允准的条件,但未对非标准题元的允准条件作出进一步阐释。本研究结合"吃食堂&qu..."吃食堂"结构中的"食堂"不属于典型的受事宾语,黄正德等(Huang et al.2009:60-76)以非标准题元结构来解释"吃食堂"结构允准的条件,但未对非标准题元的允准条件作出进一步阐释。本研究结合"吃食堂"类结构的语法演进过程指出,"吃食堂"类结构源于介词省略,但其后语义关联成为结构允准条件。在这一基础上,本研究结合句法语用界面研究的突出话语显像概念对"吃食堂"结构非标准题元允准的深层动因进行探讨并进而探讨汉语非标准题元允准的一般条件。展开更多
This paper presents recent naval applications of the SWENSE （Spectral Wave Explicit Navier-Stokes Equations） approach implemented for the first time with high order fully unstructured schemes and an efficient level-...This paper presents recent naval applications of the SWENSE （Spectral Wave Explicit Navier-Stokes Equations） approach implemented for the first time with high order fully unstructured schemes and an efficient level-set method to capture free surface flows around realistic hull geometries. Numerical simulations in waves and/or viscous flows still lead generally to very large CPU times because of grid requirements to ensure a good propagation of incident waves in the meshed part of the fluid domain that makes unreachable any hull design optimization process in an industrial context. Furthermore, even if the SWENSE method clearly shows promising results in an academic context in both regular and irregular waves, the most recent publications still highlight several issues that remain unresolved up to now, e.g. poor scalability, diffusive wake pattern, non-versatile structured mesh approaches and only very few validation test cases are carried out on Wigley or DTMB 5415 hulls. In order to overcome those numerical difficulties and get an in-depth validation of the method on several cases in realistic wave conditions, a two and a half years＇ research project has been achieved involving several steps, starting by a set of dedicated model test experiments later used as reference for the validation of the method. The CFD commercial code ANANASTM used and developed in this research program is presented and validated in detail. The use of high order schemes on unstructured grids in combination with these SWENSE method and level-set approach offer to the maritime industry an innovative and state of the art method to achieve unequaled accuracy, low computation time and some unique advantages such as, amongst others, the end of the numerical wave propagation problems. The results of the validation were pleasing and can be considered as acceptable in general, with some challenges remaining to the solyed. Results obtained indicate that an optimization processes in waves in realistic conditions is now affordable in an industrial context.展开更多
文摘"吃食堂"结构中的"食堂"不属于典型的受事宾语,黄正德等(Huang et al.2009:60-76)以非标准题元结构来解释"吃食堂"结构允准的条件,但未对非标准题元的允准条件作出进一步阐释。本研究结合"吃食堂"类结构的语法演进过程指出,"吃食堂"类结构源于介词省略,但其后语义关联成为结构允准条件。在这一基础上,本研究结合句法语用界面研究的突出话语显像概念对"吃食堂"结构非标准题元允准的深层动因进行探讨并进而探讨汉语非标准题元允准的一般条件。
文摘This paper presents recent naval applications of the SWENSE （Spectral Wave Explicit Navier-Stokes Equations） approach implemented for the first time with high order fully unstructured schemes and an efficient level-set method to capture free surface flows around realistic hull geometries. Numerical simulations in waves and/or viscous flows still lead generally to very large CPU times because of grid requirements to ensure a good propagation of incident waves in the meshed part of the fluid domain that makes unreachable any hull design optimization process in an industrial context. Furthermore, even if the SWENSE method clearly shows promising results in an academic context in both regular and irregular waves, the most recent publications still highlight several issues that remain unresolved up to now, e.g. poor scalability, diffusive wake pattern, non-versatile structured mesh approaches and only very few validation test cases are carried out on Wigley or DTMB 5415 hulls. In order to overcome those numerical difficulties and get an in-depth validation of the method on several cases in realistic wave conditions, a two and a half years＇ research project has been achieved involving several steps, starting by a set of dedicated model test experiments later used as reference for the validation of the method. The CFD commercial code ANANASTM used and developed in this research program is presented and validated in detail. The use of high order schemes on unstructured grids in combination with these SWENSE method and level-set approach offer to the maritime industry an innovative and state of the art method to achieve unequaled accuracy, low computation time and some unique advantages such as, amongst others, the end of the numerical wave propagation problems. The results of the validation were pleasing and can be considered as acceptable in general, with some challenges remaining to the solyed. Results obtained indicate that an optimization processes in waves in realistic conditions is now affordable in an industrial context.
