Recent content by Tommtb

Think I worked it out! The pressure on the valve isn't only the static pressure but also the dynamic (duh!), so when the fluid enters the port, even though the static is reduced, the dynamic is increased therefore the same pressure on the shim as if there wasn't a port.

I appreciate the reply, that does make a bit more sense. What's very confusing however is that every shock absorber modelling I come across, the pressure inside a port hole before a shim stack is never calculated, the pressure in the main chamber is always used even though its diameter is much...

I'm assuming you also mean pressure drop (P1-P2) is different to head loss? The bernoulli equation does take into account friction losses with delta(P_st) and also the change in velocity with the kinetic velocity terms. But how does the discharge coefficient do the same?

Homework Statement Hi there, I am having a theoretical dillema which does not involve a specific problem, rather I am thinking of this scenario in my head and I am not sure how to go about it. I am unsure whether to calculate P2 using the head loss or using the bernoulli equation. Because in...

Hi there, well it's not a specific textbook question, it's more about the conceptual understanding of it, I don't have any workings to show because it's all reading based. Perhaps I didn't post this in the right section?

Homework Statement I need to complete a mathematical model of a shock absorber, not in the frequency sense but by calculating the damping force due to the resistance in the valves. For an orifice there seems to be two ways of calculating the force/pressure drop 1). Discharge coefficient, this...