CHD01,
Yes, I did try the good old Lockhart Martinelli correlation. But you must recognize the fact that the LM correlation was developed in 1940s (if my memory did not betray me). This was developed purely based on lab based results, totally empirical in nature and which allowed extrapolation...
denniskb,
one way to find if the JT effect is existing is to use some compositional model with a Z-factor of 1 which will make it an ideal gas. As we know that JT coefficient for ideal gas is zero, comparing the temperature profiles predicted for similar gas compositions but with different...
We have recently carried out subsea pipeline depressuring studies (through the blow down valve attached to the pipeline) using OLGA and JT effect has been found to be present not only downstream of the blow down valve but also on the upstream side of the valve (in the pipeline). I have checked...
If it is from well head, there must be some gas and you should have the GOR (gas-oil ratio) data as well. Further do you have the full composition of the crude oil, gas and water? If yes, use compositional models otherwise use black oil model (which requires, oil sp.gr, GOR, gas MW). Obviously...
Lack of adequate residence time may be a potential cause for accidents in many cases. Three cases come to my mind immediately; these are:
a. Inadequate residence time in flare knock-out drums, which will lead to carry-over of liquid droplets to the flare tip and may result in liquid fire spray...
The maximum permissible velocity of fluid in a pipe depends on the amount of solids being carried by it (erosion criteria/ solid deposition criteria), nature of fluid and the possibility of flashing in the pipe (due to pressure drop in which case the single phase may become...
