Study of the effect of wind speed on evaporation from soil through integrated modeling of the atmospheric boundary layer and shallow subsurface

Davarzani, Hossein; Smits, Kathleen M.; Tolene, Ryan M.; Illangasekare, Tissa H.

doi:10.1002/2013wr013952

Cited by 135 publications

(120 citation statements)

References 78 publications

Supporting

Mentioning

115

Contrasting

Order By: Relevance

“…Figure 15b shows the saturation evolution over time. The simulated saturation curves look similar to those from Davarzani et al (2014). Also similar in both studies is that the near soil surface saturation evolution is better approximated than at deeper depths.…”

Section: Porous-medium Quantitiessupporting

confidence: 74%

“…Experimental results are taken from Davarzani et al (2014); please refer to this source for a detailed description of measurement devices, materials, and methods. Experimental data/results are available on request to the corresponding author.…”

Section: Methodsmentioning

confidence: 99%

“…The objectives of this work are (i) to present a numerical model concept that considers turbulence and roughness and can be applied to various coupled porous-medium/free-flow applications, (ii) to analyze the sensitivity of parameters and processes that influence evaporation from rough and permeable surfaces induced by an adjacent turbulent free flow, and (iii) to demonstrate the applicability of the modeling approach by comparing simulation results to existing bench-scale evaporation experiments (Davarzani et al 2014). …”

Section: Figmentioning

confidence: 99%

“…The transfer fluxes and state variables at the interface are model output. In contrast to other models, which use Richards equation (Defraeye 2011), consider only one-phase flow (Dahmen et al 2014), do not include turbulence (Davarzani et al 2014), or are more of theoretical nature (Discacciati and Quarteroni 2009;Lemos 2009;Rybak et al 2015), this concept includes two fluids phases inside the porous medium and models non-isothermal component transfer with an adjacent turbulent, roughness-affected free flow.…”

Section: Modelsmentioning

confidence: 99%

“…The residual saturation is reached faster in simulations than in the measurements. Davarzani et al (2014) concluded that this discrepancy in stage-II saturation distribution comes from overestimating the temperature variations in the porous medium. This is supported by the fact that a porous medium with constant temperature boundary conditions better approximates the measured temperature profiles and leads at least in the first days to a better match with measured saturations (Fig.…”

Section: Porous-medium Quantitiesmentioning

confidence: 99%

See 4 more Smart Citations

Effect of Turbulence and Roughness on Coupled Porous-Medium/Free-Flow Exchange Processes

2016

View full text Add to dashboard Cite

The interactions between turbulent free flow and flow in a porous medium are of key interest in different fields, e.g., meteorology, agriculture, building physics, and aerospace engineering. Properly understanding the strongly coupled exchange processes between the two domains is crucial to describing these interactions. In (Mosthaf et al. in Water Resour Res 47(10):W10522, 2011. doi:10.1029/2011WR010685), a concept for coupling laminar compositional single-phase free flow to compositional two-phase porous-medium flow under non-isothermal conditions was presented. In this study, the existing coupling concept is first extended to turbulent free-flow conditions. This includes the interface conditions between a Reynolds-averaged Navier-Stokes free flow using algebraic turbulence models and a Darcy porous-medium flow. Second, eddy viscosity and boundary layer models for a rough interface are integrated into this model concept. Results from laboratory evaporation experiments are used for comparison of the developed model concept. A sensitivity analysis of the evaporation rate and porous-medium quantities on different model setups, boundary conditions, BeaversJoseph coefficients, and roughness lengths is performed. Results demonstrate how including turbulence, either with eddy viscosity or boundary layer models, affects the evaporation rate. The model concept is able to predict early stage-I and intermediate to later stage-II evaporation rates. Sand-grain roughness concepts are successfully included into the model and show the desired qualitative effect.

show abstract

Section: Porous-medium Quantitiessupporting

confidence: 74%

Section: Methodsmentioning

confidence: 99%

Section: Figmentioning

confidence: 99%

Section: Modelsmentioning

confidence: 99%

Section: Porous-medium Quantitiesmentioning

confidence: 99%

See 3 more Smart Citations

Effect of Turbulence and Roughness on Coupled Porous-Medium/Free-Flow Exchange Processes

2016

View full text Add to dashboard Cite

show abstract

Continuum-scale investigation of evaporation from bare soil under different boundary and initial conditions: An evaluation of nonequilibrium phase change

2015

View full text Add to dashboard Cite

Evaporation and condensation in bare soils govern water and energy fluxes between the land and atmosphere. Phase change between liquid water and water vapor is commonly evaluated in soil hydrology using an assumption of instantaneous phase change (i.e., chemical equilibrium). Past experimental studies have shown that finite volatilization and condensation times can be observed under certain environmental conditions, thereby questioning the validity of this assumption. A comparison between equilibrium and nonequilibrium phase change modeling approaches showed that the latter is able to provide better estimates of evaporation, justifying the need for more research on this topic. Several formulations based on irreversible thermodynamics, first-order reaction kinetics, or the kinetic theory of gases have been employed to describe nonequilibrium phase change at the continuum scale. In this study, results from a fully coupled nonisothermal heat and mass transfer model applying four different nonequilibrium phase change formulations were compared with experimental data generated under different initial and boundary conditions. Results from a modified Hertz-Knudsen formulation based on kinetic theory of gases, proposed herein, were consistently in best agreement in terms of preserving both magnitude and trends of experimental data under all environmental conditions analyzed. Simulation results showed that temperature-dependent formulations generally better predict evaporation than formulations independent of temperature. Analysis of vapor concentrations within the porous media showed that conditions were not at equilibrium under the experimental conditions tested.

show abstract

An efficient numerical model for the simulation of coupled heat, air, and moisture transfer in porous media

Berger

Dutykh

Mendes

et al. 2020

Engineering Reports

View full text Add to dashboard Cite

This article proposes an efficient explicit numerical model with a relaxed stability condition for the simulation of heat, air, and moisture transfer in porous material. Three innovative approaches are combined to solve the system of two differential advection‐diffusion equations coupled with a purely diffusive equation. First, the DU FORT‐FRANKEL scheme is used to solve the diffusion equation, providing an explicit scheme with an extended stability region. Then, the two advection‐diffusion equations are solved using both the SCHARFETTER‐GUMMEL numerical scheme for the space discretisation and the two‐step RUNGE‐KUTTA method for the time variable. This combination enables to relax the stability condition by one order. The proposed numerical model is evaluated on three case studies. The first one considers quasi‐linear coefficients. The theoretical results of the numerical schemes are confirmed by our computations. Indeed, the stability condition is relaxed by a factor of 40 compared to the standard EULER explicit approach. The second case provides an analytical solution for a weakly nonlinear problem. A very satisfactory accuracy is observed between the reference solution and the one provided by the numerical model. The last case study assumes a more realistic application with nonlinear coefficients and ROBIN‐type boundary conditions. The computational time is reduced 10 times by using the proposed model in comparison with the explicit EULER method.

show abstract

Study of the effect of wind speed on evaporation from soil through integrated modeling of the atmospheric boundary layer and shallow subsurface

Cited by 135 publications

References 78 publications

Effect of Turbulence and Roughness on Coupled Porous-Medium/Free-Flow Exchange Processes

Effect of Turbulence and Roughness on Coupled Porous-Medium/Free-Flow Exchange Processes

Continuum-scale investigation of evaporation from bare soil under different boundary and initial conditions: An evaluation of nonequilibrium phase change

An efficient numerical model for the simulation of coupled heat, air, and moisture transfer in porous media

Contact Info

Product

Resources

About