- #1

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Assume that :

1)rotor's diameter is 3mm.

2)rotor's thickness is 1cm.

3)Density : 7800 kg/m^3.

4)Specific heat (Cp) : 500 J/Kg K.

5)Thermal conductivity (K) : W/mK.

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- Thread starter akki2063
- Start date

- #1

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Assume that :

1)rotor's diameter is 3mm.

2)rotor's thickness is 1cm.

3)Density : 7800 kg/m^3.

4)Specific heat (Cp) : 500 J/Kg K.

5)Thermal conductivity (K) : W/mK.

- #2

- 141

- 7

The simple method:

Figure out the mass.

Figure out the energy absorbed in J

Work out the temp rise from the specific heat. I.e 500KJ into 1kg = 1000°K

- #3

berkeman

Mentor

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Assume that :

1)rotor's diameter is 3mm.

2)rotor's thickness is 1cm.

3)Density : 7800 kg/m^3.

4)Specific heat (Cp) : 500 J/Kg K.

5)Thermal conductivity (K) : W/mK.

Check your PMs. You *must* show your efforts before we can provide tutorial help. That is in the PF Rules (see the top of the page under Site Info).

- #4

SteamKing

Staff Emeritus

Science Advisor

Homework Helper

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- 1,670

A rotor diameter of 3mm is almost microscopic. Are you sure this dimension is correct?

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