What is the difference between MFIX and Fluent Eulerian multiphase modelling, particularly for fluidized beds?

02 February 2019 0 7K Report

What is the difference between MFIX and Fluent Eulerian multiphase modelling, particularly for fluidized beds. since MFIX is able to predict correct pressure drop below min fluidization velocity, but FLUENT doesn't predict correctly. for reference "http://fluidsengineering.asmedigitalcollection.asme.org/article.aspx?articleid=1864215" (attached)

Badges
Science topic

More Muhammad Ali Uzair's questions See All

Is it possible to solve the flow using cell size smaller than the particle size using eulerian multiphase approach?

Hi In eulerian multiphase model, it is assumed that mass and momentum are transferred on a cell-basis. So, if cell size is smaller than particle size, it means that the math is incorrect. But...

10 November 2018 4,482 2 View

How to write udf for radial distribution function?

Hi I need to write udf for solid solid interaction using modified syamlal obrein symmetric drag model in ansys fluent. In the model, there is a term of radial distribution coefficient go,ls. I...

09 October 2018 576 2 View

Covergence problem in eulerian multiphase (three phases) model in ansys fluent?

Dear All, I am facing convergence problem in multiphase (eulerian-eulerian) problem Problem Description three phases: air, and two granular phases air enters from the bottom one slid phase is...

07 August 2018 6,580 15 View

Can coal calculator in Ansys Fluent be used to calculate volatile composition for biomass gasification/pyrolysis?

Hi everyone I am going to simulate a biomass gasification problem. can I use COAL CALCULATOR for determination of volatile composition for BIOMASS gasification/pyrolysis from ultimate and...

05 June 2018 8,686 4 View

How to define biomass as granular phase in ansys fluent?

Hi all How to define biomass as granular phase in eulerian-eulerian multiphase model in ansys fluent? given that there is no biomass material type available in fluent database Thanks

05 June 2018 9,978 7 View

Elemental and Proximate analysis, wet and dry basis?

Hi all, I have some confusions regarding ultimate (elemental) and proximate analysis 1) Should the sum of all percentages be always 100 (for both analyses)? (Figure 1 attached, doesn't make...

04 May 2018 8,331 4 View

How to determine biomass mixture composition from elemental and proximate analysis?

Hi all I have an equation of the form CxHyOz---->(decomposition) aCO + bCO2 + cCH4 +d H2 how can i get the values of a, b, c and d from elemental and proximate analysis of biomass? x,y,z are...

04 May 2018 2,115 5 View

How can I write a scheme file for FLUENT which can write value of a variable (e.g. air velocity on a line/rake)?

My case is a transient multi-phase simulation. I saved case and data every 100 time-steps (lets say there are 100,000 time steps). Now I want to write solution data for a variable (lets say...

31 December 2017 8,776 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

16 June 2021 0 0 View

fatal error

16 June 2021 0 0 View

fatal error

16 June 2021 0 0 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

What techniques can I use to determine the miscibility of polymer blends?

The term miscibility refers to the single-phase state in thermodynamics. I do not mean the compatibility of different components. To determine the miscibility I know several techniques such as...

03 March 2021 4,107 4 View

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 3 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View