Acoustic Absorption Calculation: Ultrasonic Sound in Water

AI Thread Summary
The discussion focuses on calculating acoustic absorption in water, specifically for ultrasonic sound. Attenuation is highlighted as being proportional to the square of frequency, while absorption refers to the conversion of acoustical energy into heat by the medium. Participants note the absence of a standard formula or absorption coefficient, as it varies with frequency. The relationship between absorption and attenuation is clarified, emphasizing that attenuation results from both absorption and dispersion. The conversation encourages further research on the topic for a deeper understanding.
Haziq Zaini
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What is the formula to calculate acoustic absorption in water? particularly sound in the ultrasonic range.
 
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Hi there
welcome to PF

Haziq Zaini said:
What is the formula to calculate acoustic absorption in water? particularly sound in the ultrasonic range.

doesn't matter what frequency

attenuation is proportional to the freq 2

there's dozens of hits on google when ultrasonic sound absorption in water is typed in

http://www.bing.com/search?q=ultras...opResult&FORM=IETR02&conversationid=&pc=EUPP_

time for you to go do some reading :smile:

cheers
Dave
 
thanks dave

i understand that Attenuation is the gradual decrease/dissipation of Acoustical energy whereas Absorption is the acoustical energy being takenup by the medium; in this case, acoustical energy is converted to heat.

Like u said attenuation has a proportional relationship to the frequency. However, there is not really a standard Absorption formula or absorption coefficient.If there was I probably, haven't found it or unable to comprehend. From what i found; at different frequencies, the absorption coefficient varies. Correct me if I'm wrong.
 
Haziq Zaini said:
whereas Absorption is the acoustical energy being takenup by the medium; in this case, acoustical energy is converted to heat.

not whereas ... attenuation is the result of absorption ( and dispersion) :smile:
 

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