Develop operating envelope?

how do you develop an operating envelope for a solar compressor? what data I need and how do I know the operating envelope would be "perfect"? I have never done anything on operating envelope,...

04 May 2017 6,439 1 View

How do you reflect on a book?

how do you reflect on a book? I usually just close the book and give some thoughts to it but i feel like its not effective way to reflect by just giving thoughts. What are your suggestions? How do...

07 August 2016 9,145 4 View

Can I thank the people who have helped and gave me answers to my questions?

I would like to say thank you to all of you who have helped me so far with my thesis on the movement and concentration of suspended particles in the nodal planes of an ultrasonic standing wave...

05 June 2016 8,723 1 View

How do I get an 80 mark and above on writing a dissertation/thesis project?

I have finished my literature review and I have finished the draft of my numerical simulation(or you could say my own project). What is left is to 'beautify' my dissertation more. How do I get a...

04 May 2016 3,510 2 View

Why are the particles concentrated in the nodal planes for only a period of time?

As you can see from the attached diagram, the particles are concentrated in the nodal planes at 0.008 s. But at 0.1s, the particles are not as concentrated in the nodal planes as at 0.008 s ( i.e....

03 April 2016 4,445 9 View

Look into my acoustic pressure field, does it look like having an acoustic streaming?

Why is it that in the middle there are no standing wave field?How will the particles move when the standing wave field is only on the upper and lower of the cavity?

03 April 2016 4,683 5 View

How much nitrogen is required for regenerating a vapour phased carbon bed adsorption?

03 April 2016 4,821 3 View

What can you deduce from my 1D plot graph of the mass fraction of suspended particles in a standing wave field?

The y-axis shows the mass fraction of the suspended particles and the x-axis shows the length of the cavity. When x = 0, that is to the left end wall of the cavity, when x = 21, that is at the...

03 April 2016 7,848 2 View

For the COMSOL simulation of particle manipulation using ultrasonic standing wave, why is the resonant freq. different at different mesh sizes?

03 April 2016 4,588 3 View

Why are my 1D and 2D plot results look different [COMSOL, ultrasonic standing wave on suspended particles]?

03 April 2016 9,032 2 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

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

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

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

What is the most Operating System (OS) which can be INSTALL on Tiny hard devices like Raspberry Pi (RPi) hardware ?

I'm targeting to deploy a mesh network and manually configure MANET routing protocols. I'm preparing scenarios, architectures, and hard devices needed to do that. Are there some step-by-step...

03 March 2021 1,931 5 View

Is there any tutorial for comsol general projections?

Hi, im trying to make a projection in a 3d comsol model. I have a non uniforme chanel and my intention is to get the average tempreture in the y-z cross section and se the average tempreture...

02 March 2021 4,624 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

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 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

Is it possible to do piezoelectric coupling in ANSYS-APDL or COMSOL between tapered substrate and rectangular piezoelectric patch?

How to do Piezoelectric coupling in ANSYS-APDL or COMSOL between tapered substrate and rectangular piezoelectric patch? Piezoelectric coupling between the rectangular substrate and rectangular...

02 March 2021 9,833 3 View