Uncertainty of propagation and entrainment characteristics of lock-exchange gravity current

Yuan, Yeping; Dongrui, Han; He, Zhiguo; Xiong, Jin; Zhang, Jiaxin; Lin, Ying-Tien

doi:10.1007/s10652-022-09904-y

Cited by 2 publications

(6 citation statements)

References 65 publications

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“…It would correspond to the inertia phase from Yuan et al. (2022). A deceleration, which should be followed by a collapse and of the GF, leading to its eventual dissipation.…”

Section: Resultsmentioning

confidence: 99%

“…(2022): An acceleration over the first 250 s, akin to the slumping phase from Yuan et al. (2022). A constant‐acceleration plateau of a few hundred seconds, starting shortly after the end of the forcing.…”

Section: Resultsmentioning

confidence: 99%

“…Although the LC instability has long been studied in the context of density current (Cantero et al., 2005; Dai & Huang, 2022; Härtel, Carlsson & Thunblom, 2000; Härtel, Meiburg & Necker, 2000; Horner‐Devine & Chickadel, 2017; Meyer & Haerter, 2020; Parsons, 1998; J. E. Simpson, 1972, 1982; Xie et al., 2019; Yuan et al., 2022), there exists no consensus as to its triggering mechanism. The most‐recognized explanation for the formation of LC waves attributes it to the no‐slip surface condition: the shear stress causes the bulk of the gravity current to be raised some distance above the slower near‐surface front (J. E. Simpson, 1972, 1982).…”

Section: Resultsmentioning

confidence: 99%

“…This would occur outside the bound of the computational domain and is not captured here. It corresponds to the viscous phase as defined in Yuan et al (2022).…”

Section: Development Of the Lobe-and-cleft Instabilitymentioning

confidence: 99%

“…A constant-acceleration plateau of a few hundred seconds, starting shortly after the end of the forcing. It would correspond to the inertia phase from Yuan et al (2022). 3.…”

Section: Development Of the Lobe-and-cleft Instabilitymentioning

confidence: 99%

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On the Sensitivity of Convective Cold Pools to Mesh Resolution

Fiévet

Meyer

Haerter

2023

J Adv Model Earth Syst

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It is well recognized that triggering of convective cells through cold pools (CPs) is key to the organization of convection. Yet, numerous studies have found that both the characterization and parameterization of CP effects in numerical models is cumbersome—in part due to the lack of numerical convergence with respect to the horizontal mesh resolution, Δx, obtained in typical cloud‐resolving simulators. Within a comprehensive numerical convergence study we systematically increase the horizontal resolution in a set of idealized large‐eddy simulations. Our analysis captures key CP processes, namely free propagation, frontal collision and merging of gust fronts. We characterize the numerical convergence of tropospheric moistening rates, gust front vortical strength and propagation speed, and the amplitude of the lobe‐and‐cleft instability. The understanding gained from this analysis may help develop robust subgrid models for CP dynamics.

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“…It would correspond to the inertia phase from Yuan et al. (2022). A deceleration, which should be followed by a collapse and of the GF, leading to its eventual dissipation.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…This would occur outside the bound of the computational domain and is not captured here. It corresponds to the viscous phase as defined in Yuan et al (2022).…”

Section: Development Of the Lobe-and-cleft Instabilitymentioning

confidence: 99%

“…A constant-acceleration plateau of a few hundred seconds, starting shortly after the end of the forcing. It would correspond to the inertia phase from Yuan et al (2022). 3.…”

Section: Development Of the Lobe-and-cleft Instabilitymentioning

confidence: 99%

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