How i can write transient condition in a pde thermal model?

hi, i wolud like to know , about pde thermal model, how i can write internal heat source or bounday conditions that depends of space or time when they are with exponent.

for example , how i can write 2*t^2 using state.time ? and y^2 using region.y ?

is this correct?

handlename=@(region,state) region.y.^2 * 2 * region.state.^2

or is region.state.^region.state to express the dipendens of t^2

and how i can write when i have a function that depends just of space , usign always handle ?

best regards,

GS

Answer 1

[Ravi Kumar]

Example: If you want to write y^2 - 2*t^2, you write:

handlename=@(region,state) region.y.^2  - 2 * state.time^2

Yes, if it depends on just space you still write a function handle that uses only region data:

Example: If you want to write 2*x^2+3*y^3, then you can write it as:

handlename=@(region,state) 2*region.x.^2 +3*region.y.^3

Regards,

Ravi

Answer 2

[giuseppe sasso]

thank you so much for the answer.

so, when i'm using handle to express a t^2 is "state.time.^2" not "state.time.^state.time" right?? i will use .^ if i'm using vector, right?

when i have function that depends only of time i will write "handle=@(region,state)(1+region.y-region.y)*state.time" , correct?

when i have function that depends only of space i will write "handle=@(region,state) region.y" , coorect? have i however put the term "state" inside brackets?

best regards,

GS