Recent content by sierra52

So depicting (via an illustration of the control volume) the mass flow and momentum of the fluid as it enters and leaves the control volume, noting that the flow is steady and vertical. I'm not sure at all how I sketch this. I hope this clarifies things. Thanks.

After doing extensive research, I am still confused about Control Volumes. Say that there is water flowing into a cup at a steady rate, and I am required to illustrate the momentum and mass flows, as well as the forces, how would I approach this? I have seen examples of Control Volumes but they...

If I were to say the applied torque generated by the piston force on the crank pin is 0.6 Nm, and this torque is constant, where would I go from here to estimate the running speed?

Can the running speed be simply calculated when the engine is not driving a load? Would I need to work out the varying torque on the flywheel, or can I assume the torque is constant if I were to calculate the running speed theoretically?

Thank you for your input, sorry for the late reply. I appreciate your design improvement suggestions, however currently I am looking to analyse the engine's performance as it is now, and then moving on to improve its design (taking your suggestions on board!). In order to see the effects of the...

Thanks for your reply, I have produced a basic diagram (below) to show how the piston is connected to the crank-wheel (which I am treating as a flywheel). All the dimensions stated in the original post still apply. What approach should I take to ultimately work out the angular velocity* of the...

I inputted the value of 0.1125 into a conversion calculator, and this was the result. 0.1125 m is in fact equal to 11.25 cm, not 11.25 mm.

Thanks for your input, perhaps I am mistaken, but wouldn't that mean the radius (distance from centre of wheel to pin) is in centimeters, not millimeters, since 11.25x10^-2 m = 11.25 cm = 112.5 mm, and the actual radius is 11.25 mm, not 11.25 cm?

Thanks for your reply, I am making use of brass bearings.

I am trying to work out the angular acceleration of a small flywheel (with axle running through) when an attached piston (by means of a pin) with an outstroke force acts on it. I assumed I would need to work out the torque using the formula torque = force x radius, and find out the flywheel’s...