Can a mass flow rate be negative in fluent while simulating air flow in upper airways on humen?

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Separated objects vs Non-Manifold Assembly?

I'm trying to do a simulation between the Maxilla and the Mandible I converted the Dicom file from the CT scan to a CAD module and module the articular discs via 3d software. I have two options...

08 February 2021 8,731 2 View

Can I apply a relative force between two elements in Ansys workbench?

I want to apply elastic tension between 2 orthodontic mini-implants is there a way to add relative force between 2 elements or i have to specify the force vector for each implant individually ?

05 February 2021 1,299 4 View

What constraint can be used for rigid steel saddles and conrete beam under four point loading in ABAQUS?

Nodes are missing intersection with their respective master surface or outside the adjust zone, when using tie constraint.

01 February 2021 3,591 6 View

Can I study the effect of 2 independent variables on a dependent variable when there is an effect relationship between the independent ones too?

Hello researchers.. I want to study the effect of teacher's mindset on students' attitude and the effect of students' mindset on their attitude. But I know there is an effect relationship...

26 January 2021 1,853 1 View

Which method I have to use it for FMRI registration?

I wanna to do the registration of a 4D file of fMRI modality ( I used feat from fsl brain but it doesn't transform data to standard space) so if someone know a method that can generate a 4D...

13 January 2021 5,495 2 View

How to use comsol multiphysics in the filed of electrochemistry and corrosion?

I need help on how to use the COMSOL multiphysics especially in the field of corrosion.

22 December 2020 782 4 View

Where can I find unsupervised image super resolution examples on MATLAB?

Hello. I am trying to find practical implementations for image super resolution using unsupervised learning on MATLAB. So far I am only able to find generic examples like K-means for data...

11 October 2020 7,108 7 View

How can I improve the Cronbach Alpha results without deleting too much items?

I am running pilot test and the Cronbach's alpha is 0.71 for all of the items. However, when I come to analyze every section of the questionnaire individually, In found that it is too low. And I...

10 October 2020 6,213 1 View

Is there a program which gives X,Y Coordinates of Lines or Points on Scanned Images ?

We want to extract the X,Y coordinates manually from imported figure (image). Figures contain clear or non clear points or lines.

25 March 2020 1,964 3 View

Where can I find SAR dataset for object detection?

Hello everyone. Can anyone recommend a publicly available SAR dataset for object detection (e.g. ships/planes)? Scene classification and/or semantic segmentation SAR datasets could be useful as...

18 February 2020 3,513 3 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

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

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

What is the characteristic length to determine the Reynolds number for the scattered turbulent fluid flow?

Dear all, I just saw this example in FB on the difference between laminar flow and turbulent flow. The flow from a pipe hits the sink and scattered. The flow from the pipe is characterized as...

02 March 2021 1,999 5 View

Why the results when using wall thickness and when using shell conduction are different in ansys fluent?

Actually, I am running cfd simulation for a heat exchanger which has two fluids one hot and other one is cold fluid. there is a solid domain between them, which I removed and instead I have used...

01 March 2021 9,537 2 View

Joint behaviour in Abaqus is not captured well?

I am working on roof joint and trying to simulate the behaviour in Abaqus. I am successful in running the model but the final graph does not follow the experimental curve in the negative direction...

01 March 2021 6,661 3 View