I have a Bruel & Kjaer sound level meter. However it is an older type. It gives the output of SEL, Leq, Max SPL, Min SPL.
Does anyone know how to calculate a L10 or L90 from this information????
IE. The sound pressure level exceeded 10/90% of the time...
Thanks guys
I am modelling parison forming in the glass bottle manufacturing process. It is a transient problem with heat transfer between glass and blank mould. THe process involves very high temperatures (1200deg c) and very sudden cooling in 2 seconds.
The aim of the project is to get a better...
Would anybody know where to look for time dependant thermal properties of glass?
I am interested in the conductivity and specific heat at 600 to 1200 degrees celcius.
Thanks.....
I am attempting to model the blank mould during parison forming.(ie Glass bottle manufacture)
The model involves the following
Transient Heat transfer - 5 second cycles
Glass @ 1200 degrees
An air gap 0.2mm
Blank mould - cast iron
Forced Convection on blank mould fins
Has anybody got any...
I am modelling the transient heat transfer between glass and mould. Between the glass and mould is an air gap of 0.2mm which affects the heat transfer.
I am modelling in 2d using plane 55 elements for the glass and mould. My questions are:
i) WOuld a CONTACT 151 element be suitable for...
