Parameter sensitivity of a wood chips flow model
Artikel i vetenskaplig tidskrift, 2024

A computational fluid dynamics (CFD) study of the parameter sensitivity of a wood chips model was performed on an industrial impregnation vessel, which is the first step in a continuous cooking system. The solid and liquid phases were both treated as continua and it was found that the continuum model for the solid wood chips phase could capture the previously observed oscillating formation of arches in the contracting part of the vessel, which will occur at different levels of volume fraction depending on the material constants. The parameters that were examined are the solid pressure, permeability, viscosity, and wall friction. It was found that all the parameters strongly affect the distribution of the wood chips in the vessel as well as the oscillation effects, hence also the flow field which is important to accurately predict in order to ensure optimal performance of the impregnation vessel. Thus, correct material data for these types of simulations are crucial to the outcome and should be chosen for the appropriate situation and bio-material.

CFD

arching

numerical model

wood chips

multiphase

Författare

Sofia Evysdotter

Valmet

Tomas Vikström

Valmet

Kungliga Tekniska Högskolan (KTH)

Anders Rasmuson

Chalmers, Kemi och kemiteknik

Canadian Journal of Chemical Engineering

0008-4034 (ISSN) 1939019x (eISSN)

Vol. In Press

Matematisk modellering av massakokare

Energimyndigheten (45123-1), 2018-01-01 -- 2019-12-31.

Styrkeområden

Produktion

Energi

Ämneskategorier

Energiteknik

Kemiteknik

DOI

10.1002/cjce.25435

Mer information

Senast uppdaterat

2024-08-06