Ezekwem Chidozie

10 Questions 7 Answers 0 Followers

Questions related from Ezekwem Chidozie

Can i know if the fluid is Newtonian from a volume concentration -viscosity graph for nanofluid?

I plotted of graph of volume concentration versus viscosity for a particular nanofluid. i got a straight line graph. i would like to know if this graph can tell me if the fluid is Newtonian or...

04 April 2018 2,394 3 View

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

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

02 February 2017 8,577 2 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...

02 February 2017 7,078 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...

07 July 2016 2,777 6 View

Can these correlations be used in calculating the average nusselt number for cone shaed helical coils?

Can these two correlations be used in computing the average Nusselt number for cone shaped helical coils? The correlations are written in the attached file.

06 June 2016 2,435 0 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...

05 May 2016 1,567 4 View

Mesh independent study?

I am carrying out mesh independent study on fluid flow in curved tubes. I am trying to vary the pitch of the curved tube. So, I have various coiled tubes with the same dimensions but with varying...

05 May 2016 894 1 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...

02 February 2016 6,056 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...

02 February 2016 3,706 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?

12 December 2014 8,898 5 View