Recent content by Turbodog

Another way to look at it is that even though the fast moving water jet is at a lower pressure, the kinetic energy has increased. When you spray your friend with this jet, there is a momentum change of the fast moving low pressure water when it stikes him so he will feel that force.

In my experience, the company I work for keeps the most often used engineering equations. Most equations are completed using proprietary software, or within excel spreadsheets. The reason is that many of the equations I use have been empirically derived over the years and aren't in textbooks...

Gravity is not energy. It makes no sense to say "convert gravity to mechanical energy". Gravity is an acceleration which causes a force on a mass.

oops, I made a simple mistake with the steam flow. 12 kg/s = 43200 kg/hr. Which is a big difference in my mind. Sorry for that. And yes, you're right, the theortical power would be as much as 384 kw as you said. Thanks for the correction, so the theoretical steam rate would be more like...

The steam table I used gives me a different answer: Inlet conditions: 16 bar(abs) - 201.4 C (sat) - h = 2792 kj/kg Exhaust 6.667 bar (abs) - 163 C (sat) - h = 2760 kj/kg Normally, when finding the exhaust state point, we have to use the enthalpy at the saturation line, quality x = 1...

I don't disagree with your statements on an intuitive level. I do notice that the inlet conditions are a bit different. The compressor map is only really valid for the specified inlet conditions so that may also be contributing to the discrepancy. For example, you are actually starting with a...

Thanks minger! This is a very interesting discussion for me as I at one point worked on the v11 and v12 Workbench Development team as a co-op and now I work for a turbomachinery OEM. The real test for model accuracy is how the predicted critical speeds line up with the vibration measurements...

Mechanical engineering is the best engineering discipline . I say this because this is what I chose. You will have to answer for yourself what you love to do. I can only speak for mechanical engineering. I like it because it can be applied to a wide range of fields and it is very practical...

I can't speak to aero engines, but the idea of using electric motors to power compressors on land based applications is quite common. Depending on the plant, compressors are powered by either a steam turbine, a gas turbine, an electric motor, a gas expander, or perhaps a combination of two...

Copaltite might work for you. http://www.escopro.com/copaltite-sealants.html

You could always go for the E.I.T. certification as the first step towards professional certification. This is more important to some positions than to others but if you are not sure where you will end up and would like another thing to put on your resume it would not hurt.

My company has a team of field service engineers. They get to travel a lot and have a lot of hands on work at customer sites. Field service positions can be entry level and are a great opportunity to learn a lot about your company's product or the industry it serves. I am not one but this is...

There is only the amount of torque proportional to the power divided by rotational speed. For example, if the propeller uses power that only requires 120 ft.lbs. of torque and the motor is directly coupled to it, the motor is only producing 120 ft.lbs of torque. No torque is wasted. If the...

Yes, it is fun being a mechanical engineer. For a year and a half so far I've really enjoyed my job. In my short experience I've had to find solutions to open ended tasks. You enjoy physics now, like myself you may find that you enjoy mechanics, dynamics, and elements of mechanical design...

DON'T DISABLE THE GOVERNOR! It will overspeed and you will shatter your piston rod within a few minutes. Ask me how I know... a serviceman recently messed up my dad's snowblower and the engine ran away. When he didn't shut it down after about 2 minutes it was done. The piston rod was in about...