22 citations · 38 across the 6 of their papers we have counts for
6 papers
Pre-averaging fractional processes contaminated by noise, with an application to turbulence
David Chen, Yu Cheng, Carsten Chong +4
In this article, we consider the problem of estimating fractional processes based on noisy high-frequency data. Generalizing the idea of pre-averaging to a fractional setting, we e…
Logarithmic profiles of velocity in stably stratified atmospheric boundary layers
Yu Cheng, Andrey Grachev, Chiel van Heerwaarden
The universal velocity log law first proposed by von Kármán in the near-wall region of turbulent shear flows is one of the cornerstones of turbulence theory. When buoyancy effects…
On the logarithmic profile of temperature in the atmospheric convective boundary layers
Yu Cheng, Qi Li, Pierre Gentine
Wall-bounded turbulent flows are widely observed in natural and engineering systems, such as air flows near the Earth's surface, water flows in rivers, and flows around a car or a…
Deep learning for subgrid-scale turbulence modeling in large-eddy simulations of the atmospheric boundary layer
Yu Cheng, Marco Giometto, Pit Kauffmann +7
In large-eddy simulations, subgrid-scale (SGS) processes are parameterized as a function of filtered grid-scale variables. First-order, algebraic SGS models are based on the eddy-v…
On the Power-law Scaling of Turbulence Cospectra Part 1: Stably Stratified Atmospheric Boundary Layer
Yu Cheng, Qi Li, Andrey Grachev +3
Turbulent fluxes in the atmospheric surface layer are key input for the prediction of weather, hydrology, and carbon dioxide concentration. In numerical modelling of turbulent flux…
Turbulence Spectra in the Stable Atmospheric Boundary Layer
Yu Cheng, Qi Li, Stefania Argentini +2
Stratification can cause turbulence spectra to deviate from Kolmogorov's isotropic -5/3 power-law scaling in the universal equilibrium range at high Reynolds numbers. However, a co…