August 8, 2023 at 8:10 am
Noora
Subscriber
Hi Ashish Kumar, 
 
Thank you for  your quick reply.
 
When I define only cavity as the acoustic region, I got this.
 

I have to choose both cavity and neck as the acoustic regions in order to get result.
Moreover, when I don't apply pressure I get different frequency from the formula.
 
regards.