Work

Measurements of the Poiseuille coefficient in the slip and transitional flow regimes

Year: 2025

Type: article

Abstract: New experimental results on gas flow through a long tube in the viscous, slip and transitional regimes are presented, obtained using an improved constant-volume measurement technique. This method is based on measuring the pressure variation in the inlet tank while the outlet tank is evacuated to a low pressure. Experimental pressure data for helium, neon, argon, nitrogen, krypton and xenon are used to extract the Poiseuille coefficient through a newly developed methodology. The obtained values show good agreement with theoretical predictions. Additionally, the velocity slip coefficient is also extracted from the same pressure data for all tested gases.

Source: Journal of Fluid Mechanics

DOI: 10.1017/jfm.2025.10949

Authors: Emil Grigorov, Felix Sharipov, Pierre Perrier, Frédéric Topin, Irina Graur

Institutions: Aix-Marseille Université, Universidade Federal do Paraná

Language: English

Topic: Gas Dynamics and Kinetic Theory

Subfield: Applied Mathematics

Field: Mathematics

Domain: Physical Sciences

Open Access status: green

Funder: Agence Nationale de la Recherche

Award: Thermal effects on gas transport in catalytic membrane reactors