Title:
気液二相流のシミュレーション方法
Document Type and Number:
Japanese Patent JP7386481
Kind Code:
B2
Abstract:
To provide a technique for shortening a calculation time in a simulation of a gas-liquid two-phase flow in a case where an external force due to a gas flow acts on a droplet adhering to a solid wall surface and a contact angle of the droplet with respect to the solid wall surface changes.SOLUTION: A gas-liquid two-phase flow simulation method uses a static contact angle of a droplet to calculate a mass flow rate of gas-liquid two-phase flow based on the exchange law of a momentum between the droplet and a gas, by a motion equation for each of the droplet and the gas. The calculated mass flow rate and a velocity difference between the droplet and the gas calculated by the motion equation for each of the droplet and the gas are used to calculate a drag force acting on an interface between the droplet and the gas generated by an external force. A dynamic contact angle of the droplet is calculated using the drag force calculated in a drag force calculation step by a relational expression between the contact angle and the drag force derived in advance.SELECTED DRAWING: Figure 7
Inventors:
Yoshiyuki Tsuji
Takahiro Ito
Takaya Sato
Samurai Oyama
Keiji Komura
Takahiro Ito
Takaya Sato
Samurai Oyama
Keiji Komura
Application Number:
JP2020133864A
Publication Date:
November 27, 2023
Filing Date:
August 06, 2020
Export Citation:
Assignee:
Tokai National University Organization
DENSO TECHNO CO., LTD.
DENSO TECHNO CO., LTD.
International Classes:
G01N13/02
Domestic Patent References:
| JP2017138123A | ||||
| JP2012212833A |
Foreign References:
| US20120253767 |
Other References:
佐藤 隆哉,せん断流中の壁面上水滴挙動の動的接触角のモデル化,自動車技術会論文集,2019年05月,Vol. 50, No. 3,pp. 926-931
10.境界層と物体まわりの流れ,流体の力学 基礎編,2019年09月13日,pp. 1-7
10.境界層と物体まわりの流れ,流体の力学 基礎編,2019年09月13日,pp. 1-7
Attorney, Agent or Firm:
Nagoya International Patent Attorney Corporation