Ezekwem Chidozie

8 Questions 6 Answers 0 Followers

Questions related from Ezekwem Chidozie

In flow & heat transfer simulation in helical coil, when the top diameter is reduced, the pressure drop increased and heat transfer reduced. Reasons?

During my numerical simulation for fluid flow & heat transfer in helical coiled tube, I observed that as the top diameter (base diameter and pitch is kept constant) is reduced, the pressure...

07 March 2017 3,452 3 View

Why Ethylene glycol does has produce greater enhancement on heat transfer rate than water its flow in a tube?

Why Ethylene glycol does has produce greater enhancement on heat transfer rate than water its flow in a tube, considering that water has a higher thermal conductivity. What could be the possible...

10 February 2017 4,789 5 View

Generally speaking for most nanofluids, does volume concentration of nanofluids have a linear dependence on density and specific heat capacity?

If not, what other likely factors can affect the specific heat capacity and density of nanofluids

25 October 2016 9,231 5 View

What is the cause of the drop in thermal conductivity?

I am measuring the thermal conductivity of CuO/EG nanofluids experimentally. At low volume concentration of 1 and 2%, thermal enhancements are very high. At 3 and 4% vol. conc., thermal...

27 July 2016 9,665 5 View

I need help in analysing some TEM micrographs?

I need help in analysing some TEM micrographs of imaging of nanoparticles. I have interpreted them but need to see interpretation of some other professional. I would love to have your email to...

22 May 2016 415 3 View

Can someone explain how to use FTIR and UV-spectrometer to measure stability of nanofluids?

I want to measure the stability of alumina nanofluids at volume concentrations of 1-5vol. % concentration. The UV-Vis spectrometer needs me to dilute my samples before light can pass through. If...

15 February 2016 7,093 5 View

While sonicating AlN/water nanofluid with a probe type sonicator , the mixture forms a gel. Why is this so? How can it be averted?

Also, in order to ensure stability of the dispersion, to what pH value do I adjust the sample to? Lastly, do I mix the AlN powder with the base liquid before adjusting the pH? or do I mix the acid...

08 February 2016 6,501 1 View

Using importing geometry from autocad or solidworks for ansys simulation, which is better?

I am drawing my model in Autocad 2010 and importing into Ansys. After my simulations, the results I got where incorrect. Does drawing my geometry have something to do with this incorrect result?

06 December 2014 9,441 4 View