Water Evaporation CFD Method with the Meshfree Volume-Volume-Coupling Approach for Wet Automotive Component Dry-Out Time Prediction

被引：0

作者：

Lee J. ^{[1
]}

Baeder D. ^{[2
]}

Rehfeldt S. ^{[1
]}

Klein H. ^{[1
]}

机构：

[1] Technical University of Munich, TUM School of Engineering and Design, Department of Energy and Process Engineering, Institute of Plant and Process Technology, Boltzmannstr. 15, Garching

[2] AUDI AG, Ingolstadt

来源：

International Journal of Automotive Engineering | 2024年 / 15卷 / 01期

关键词：

body/vehicle body; CFD; computational fluid dynamics; corrosion protection; dry-out; Generalized Finite Difference Method; GFDM; mass-and heat-transfer; water evaporation;

D O I：

10.20485/JSAEIJAE.15.1_58

中图分类号：

学科分类号：

摘要：

A new two-phase mass transfer Computational Fluid Dynamics (CFD) method is developed using a meshfree collocation approach, or Generalized Finite Difference Method (GFDM), to resolve the evaporation phenomenon at the water-air interface since it is essential to estimate the water dry-out-time for corrosion protection schemes on automotive components. Thereby, the volume-volume-coupling to couple the phases – air and water – is used in order to keep a stable phase interface. At the interface, it is assumed that the main driving force of the liquid mass transfer into vapor is diffusion driven by the vapor concentration gradient. The automatized adaptive refinement based on the humidity- and velocity-gradient enabling the automation of the whole process is also developed. The newly developed method is validated with one simple and actual vehicle geometries. In vehicle geometry case, the total-dry-out times of an accumulated water source at the corner of a sunroof are measured. In order to extend the time scale of the simulation to real, the water reduction rate at the free surface is artificially accelerated once the evaporation rates are quasi stabilized. The validation results are promising, and the method could be extended into further complex vehicle applications. © 2024 Society of Automotive Engineers of Japan, Inc. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike license.

引用

页码：58 / 65

页数：7

共 24 条

[1]

Singh V.P., Xu C.-Y., Evaluation and generalization of 13 mass-transfer equations for determining free water evaporation, Hydrological Processes, 11, pp. 311-323, (1997)

[2]

Revie R.W., Corrosion and corrosion control: an introduction to corrosion science and engineering, (2015)

[3]

Roberge P.R., Corrosion engineering: principles and practice, (2008)

[4]

Demel D., Schutz T., Kolzer C., Et al., Anwendungen für Mehrphasen-cfd am Fahrzeugexterieur, Forsch Ingenieurwes, 85, pp. 679-690, (2004)

[5]

Jefferies A., Kuhnert J., Aschenbrenner L., Et al., Finite pointset method for the simulation of a vehicle travelling through a body of water, Meshfree Methods for Partial Differential Equations VII, pp. 205-221, (2015)

[6]

Wickert D., Hermsdorf F., Prokop G., Analysis of the water management on a full virtual car using computational fluid dynamics, SAE Int J Mater Manf, 13, 2, pp. 175-191, (2020)

[7]

Makana M., Kumar G., Regin F., Passenger car water wading evaluation using cfd simulation, SAE Tech Paper, (2016)

[8]

Varshney M., Pasunurthi S., Maiti D., Et al., CFD method development for simulating water fording for a passenger car, SAE Tech Paper, (2021)

[9]

Kuhnert J., Michel I., Mack R., Fluid structure interaction (fsi) in the meshfree finite pointset method (fpm): theory and applications, Meshfree Methods for Partial Differential Equations IX, pp. 79-92, (2017)

[10]

Suchde P., Conservation and accuracy in meshfree generalized finite difference methods, (2018)

← 1 2 3 →