SAW mass sensor, What is the physical explanation for frequency shift from mass loading effect?

08 September 2016 5,101 3 View

Anyone have done reserach about the rotation of single particle (spinning) by the actuation of surface acoutics wave ?

Dear All, I observed that each of microparticle seems to rotate (spin) under the actuation of acoustics wave. I am interesting in this phenomena. Is there any publication about this phenomena...

02 March 2016 2,326 2 View

How can I find exact frequency that my particle in PDMS will lineup ?

Dear All, I have SAW device(Al electrode on LinNbO3) and it was measured by impedance analyzer, Stripwidth= 50 um, resonance frequency = 20.02 MHz. After that I bond PDMS(channel width 100um) on...

01 February 2016 7,083 2 View

How can I do PIV (Particle image velocimetry) ?

Dear All, I have VDO of particle movement in microchannel, but I have no idea how can I start to do PIV ? Should I start by using Matlab...

09 October 2015 7,030 5 View

Should it be an exact SAW wavelength to actuate exact particle diameter?

09 October 2015 854 3 View

How can I find the particle accumulation rate from experiment?

Dear All, I have photos of particle accumulation in the bottom of the container. How can I find the accumulation rate ? I know PIV that can measure the velocity of the particle in the flow, but I...

09 October 2015 9,501 3 View

Is there any guideline to design the IDT pattern for SAW?

Dear All, I have read some of the IDT design pattern, normal pattern are finger and void with same distance, but there are also the pattern that the distance between finger is less than the finger...

08 September 2015 1,930 0 View

How can I couple Acoustic Radiation to Laminar flow in COMSOL?

07 August 2015 1,364 2 View

Is there anyway to control number of cells in droplet?

06 July 2015 3,890 4 View

Why am i getting error in compile UDF DPM tutorial?

Dear All, I am trying to compile the example 2 in http://www.arc.vt.edu/ansys_help/flu...ne_dpm_bc.html but I have found common problem that I have found many times "error C2065: ___________ :...

04 May 2015 1,184 0 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 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 Austenite grains in steel show much more twinning than ferrite grains?

It is oftentimes said to be a distinctive metallographic trait that differentiates a fully austenitic and a fully felly ferritic steel without etching that might distinguish between two. Why...

02 March 2021 728 2 View

LOAD DISPLACEMENT CURVES Stiffness increasing in ANSYS non linear analysis. HOW CAN I CORRECT IT?

Hi. I am doing non linear FE analysis using a new material beam under flexural 2 point loading using ANSYS. I have defined a bilinear material model. The solution has converged. In results I am...

01 March 2021 9,911 3 View

Can we distinguish the type of free fluid inside the pelvic and abdominal cavities whether blood or serous fluid using the ultrasound?

during ultrasound examination of acute abdomen, sometimes we see free fluid , can we know the type of fluid ,whether blood or not , using ultrasound only? if yes , what are the sonographic...

01 March 2021 7,476 4 View

How much pressure we can reduce at the outlet to avoid Reverse Flow?

I am simulating Heat Exchanger. I have tried and tested all the methods to resolve this issue from the internet like refining mesh, improving skewness and orthogonal quality ,extending outlet to...

01 March 2021 6,985 3 View

How to show arrows over the streamlines in CFD-post?

I follow this to make streamlines like the photos attached below: (software- CFD post-processing) First I plot the 2D streamline over a surface "streamline 1". them I plot a vector by the...

01 March 2021 8,668 3 View

Which one is easier and better at modeling slender masonry structures? ANSYS or ABAQUS?

I need to model masonry and reinforced concrete minarets for my MSc thesis. Which one is easier and better at modeling slender masonry structures? ANSYS or ABAQUS? (Or any other program for just...

01 March 2021 736 3 View

What is recommended for solid domain in ANSYS FLUENT?

Should I mesh the solid domain ? or should I use wall thickness? or Shell conduction? for Heat Transfer between two fluids of a Heat Exchanger. what is recommended?

01 March 2021 9,785 3 View