eprintid: 4444
rev_number: 11
eprint_status: archive
userid: 423
dir: disk0/00/00/44/44
datestamp: 2021-05-31 11:03:51
lastmod: 2021-05-31 11:03:51
status_changed: 2021-05-31 11:03:51
type: article
metadata_visibility: show
creators_name: Le, Anh Dinh
creators_id: anh.ld@vnu.edu.vn
title: Assessment of a Homogeneous Model for Simulating a Cavitating Flow in Water under a Wide Range of Temperatures
ispublished: pub
subjects: Aerospace
subjects: Mechanics
subjects: Phys
subjects: isi
divisions: sae
abstract: The cavitating flow on a NACA0015 hydrofoil in water under a wide range of temperatures is simulated with or without non-condensation gas using a homogeneous model. Our simplified thermodynamic model is coupled with governing equations to capture the latent heat transfer in cavitation. A numerical evaluation proves its applicability through a comparison with experimental data. As a result, the numerical evaluation illustrates good agreement with measured data for both simulations with or without non-condensation gas. The expected prediction pressure coefficient is in better agreement with experimental data for high-temperature water compared to the existing numerical data. Although the temperature depression inside the cavity is confirmed numerically, the thermodynamic effect shows a weak impact on the cavitation behavior near the boiling temperature (100oC). The cavitating flow can therefore be simulated reasonably by an iso-thermal approach at a reasonable cost. The suppression of the void fraction as the water temperature increases is deduced by the flow behavior rather than the thermodynamic effect. Finally, the impact of a non-condensation gas is closely linked to the thermodynamic properties of the water and the flow behavior. The attached cavity position shifts closer to the hydrofoil leading edge significantly in high-temperature water, while an identical position is reproduced for room temperature conditions in comparison with the simulation without a non-condensation gas.
date: 2021-04-30
date_type: published
publisher: The Americal Society of Mechanical Engineering (ASME)
official_url: https://doi.org/10.1115/1.4051078
id_number: FE-21-1025
contact_email: anh.ld@vnu.edu.vn
full_text_status: public
publication: Journal of Fluids Engineering - Transaction of the ASME
refereed: TRUE
issn: 0098-2202
funders: NAFOSTED 107.03-2020.22
citation:   Le, Anh Dinh  (2021) Assessment of a Homogeneous Model for Simulating a Cavitating Flow in Water under a Wide Range of Temperatures.  Journal of Fluids Engineering - Transaction of the ASME .    ISSN 0098-2202     
document_url: https://eprints.uet.vnu.edu.vn/eprints/id/eprint/4444/1/Assessment-of-a-Homogeneous-Model-for-Simulating-a_redirectedFrom%3Dfulltext