In an endeavor to establish a connection between the mean velocity profile in compressible wall-bounded turbulence and its incompressible analogue,a refined version of the Trettel and Larsson's(TL)transformation i...In an endeavor to establish a connection between the mean velocity profile in compressible wall-bounded turbulence and its incompressible analogue,a refined version of the Trettel and Larsson's(TL)transformation is systematically derived and rigorously assessed across diverse flow scenarios.Incorporating the recently proposed intrinsic compressibility effects and modeling the multi-layer structure of mixing lengths,the proposed transformation demonstrates exceptional performance in collapsing 57canonical flow cases,including cooled channel and pipe flows,channel flows with pseudo heat sources,as well as adiabatic and diabatic boundary layer flows.Furthermore,the transformation seamlessly extends to low Reynolds number cooled channel and pipe flows,achieving a level of accuracy unparalleled by other transformations in the current state-of-the-art.展开更多
在计算框架的稳定性时,需首先确定柱子的计算长度l0,该计算长度l0由计算长度系数μ确定。中国《钢结构设计规范》(GB50017-2003))与美国钢结构规范《AISC-Load and Resistance Factor Design Specification for Structural Steel Buildi...在计算框架的稳定性时,需首先确定柱子的计算长度l0,该计算长度l0由计算长度系数μ确定。中国《钢结构设计规范》(GB50017-2003))与美国钢结构规范《AISC-Load and Resistance Factor Design Specification for Structural Steel Buildings》在确定柱子的计算长度系数μ时存在一定的差异,对两者的基本假定、计算公式和修正系数进行比较。展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.92152101,and 92152301)。
文摘In an endeavor to establish a connection between the mean velocity profile in compressible wall-bounded turbulence and its incompressible analogue,a refined version of the Trettel and Larsson's(TL)transformation is systematically derived and rigorously assessed across diverse flow scenarios.Incorporating the recently proposed intrinsic compressibility effects and modeling the multi-layer structure of mixing lengths,the proposed transformation demonstrates exceptional performance in collapsing 57canonical flow cases,including cooled channel and pipe flows,channel flows with pseudo heat sources,as well as adiabatic and diabatic boundary layer flows.Furthermore,the transformation seamlessly extends to low Reynolds number cooled channel and pipe flows,achieving a level of accuracy unparalleled by other transformations in the current state-of-the-art.
文摘在计算框架的稳定性时,需首先确定柱子的计算长度l0,该计算长度l0由计算长度系数μ确定。中国《钢结构设计规范》(GB50017-2003))与美国钢结构规范《AISC-Load and Resistance Factor Design Specification for Structural Steel Buildings》在确定柱子的计算长度系数μ时存在一定的差异,对两者的基本假定、计算公式和修正系数进行比较。
