How can I call the density parameter from hydraulic domain in a custom block?

I'm working in a Simscape Fluids system. I specified the fluid with the Hydraulic Fluid block but I have a custom block in who I need to reference the density as a variable so that if I change the temperature in the Hydraulic Fluid the density could change in the custom block.

Answer 1

[Yoke Peng Leong]

You can access the density following the example in this documentation: https://www.mathworks.com/help/physmod/hydro/ref/hydraulicfluid.html

For example, to access the density of Skydrol LD-4 at 50 degree Celcius:

>> props = sh_stockfluidproperties;
>> temp = 50;
>> [vis, den, bmod] = props.skydrol_ld_4.prop(temp);

where "temp" is the temperature (C), "vis" is the viscosity (m^2/s), "den" is the density (kg/m^3), and "bmod" is the bulk modulus (Pa).