Dmitry Zaitsev

8 Questions 106 Answers 0 Followers

Questions related from Dmitry Zaitsev

Can anyone suggest a method to vary the wettability of the substrate?

In our experiments on thermofluidics we use copper and silicon substrates. The working fluid is usually water. Is it possible to somehow change the proprerties of the substrate (different...

06 June 2018 2,374 40 View

A point source of fluid is located near a solid wall. What is the force acting on the wall?

A point source of strength M is located at the distance of H from an infinite flat wall. What is the force acting on the wall due to the fluid flow from the source? Solutions are needed for two...

06 June 2018 1,528 17 View

For our experiments we need a solid substrate (several mm thick) with high thermal conductivity (>500 W/mK). Any suggestions?

Are there any carbon/metal or diamond/metal composites having high thermal conductivity (500-1000 W/mK) and high temperature resistance (500-1000 K)? Materials with anisotropic thermal...

05 May 2018 2,097 29 View

Are carbon nanotubes dangerous for human health?

We're going to use carbon nanotubes (both single and multi walled) in our experimental research. Is there any risk to health from the nanotubes? What are the safety measures?

05 May 2018 202 17 View

Anybody knows reliable sources with physical properties of silicone oils?

I need physical properties of the following silicone oils: 3, 5, 10, 50, 100, 200, 500, 1000 centistokes (cSt). Especially needed is the temperature coefficient of the surface tension...

05 May 2018 4,721 6 View

Are there any data in the literature about the dynamics of microscale bubbles during nucleate pool or flow boiling?

Experimental, numerical or theoretical data are needed about the bubble growth dynamics in nucleate pool of flow boiling for bubbles with the size less than 1 mm (bubble lifetime less than ~1...

05 May 2018 4,923 8 View

Can anyone suggest an engineering solution to generate a very high heat flux at the surface area of around 1 cm2 (3-5 kW/cm2)?

In our Lab we have elaborated a very effective cooling system capable to remove more than 1 kW of power from the area of 1 cm2, keeping the surface temperature below 130 deg. C. See for...

04 April 2018 3,766 72 View

A powerfull laser (3-5 kW) is needed for intense uniform heating of the copper substrate with area of 1 cm2. Any suggestions?

Our task is as follows: We have a copper plate with area of 1 cm2 and thickness of several mm. To the bottom side of the plate we apply intense laser heating; from the top side we remove the...

04 April 2018 7,576 28 View