Hyunjae Song
Posts
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Answered
Problem of wave propagation direction
Hi. I design two medium and propagate wave medium 1 to 2 I don't know how I can fix it. Can I set boundary condition between two medium? (both medium is water now) I already set absr 4 boundary c...
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Question about pout
Hi. I do my simulation and want to get data from results. I use command 'calc-pres' and set simulation area 45 mm x 110 mm and box size is 0.1e-3 and simtime is 1e-3 But when I use 'pout-hist pr...
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Problem of beam focus point
Hi. I have problem of beam focus point. As I ask before, I'm in trouble of prove modeling and result. I designed concave transducer and fire sine wave, 200kHz, 1 pulse with 1 MPa (sine 0.2e6 1e6 ...
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Question about box
Hi. I'm still simulation about point source. Here is my modeling My question is signal at focal point depends on box size. Let's assume I set box as 0.1e-3, Then I can get 1 MPa at focal point. Bu...
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How can I make point source?
Hi. I'm trying to make point source with 1MPa, 200kHz.Half sine. pupple : point source (waternl_1) blue : water (waternl, it's same waternl_1) green : air I'm trying to drive function at surface o...
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How can I simulation for thermal change using AC voltage?
Hi. I'm planning to compare two simulation tools. The object of this simulation is monitor thermal change inside of phantom. I use hyperthermia which use AC voltage input (220 V) Here is modelin...
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Hi I found something wrong (memory overflow?)
Hi. I use input signal having time length 2 ms 26001 samples. I load this input signal using data-hist and put this at func. datahist drv1 * water_lv1-press.dat 1.end func hist drv1 1. bounside xmi...
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How can I check unit of distance?
Hi. I'd like to know unit of distance . When I use MATR-SDMP, I saw dilation and the unit is dB/distance. I want to know specific distance. Normally I use unit of dilation is dB/cm at 1MHz. I'd l...
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Question about velocity input signal
Hi. I asked last year with similar question ,but I still can't understand Chloe said if I have velocity input data, use boun-defn and node. Does it change boundary condition? Which means if I want ...
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Method for partially fine grid
Hi. I have problem of making mesh. I have to model 2 block, which has 10 um and 20 mm. As you can see, there is a huge difference with them. Center frequency is 100kHz and box size is 150, then mes...