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Questions related from Sandro Longo
Dear Colleagues, I would like to expand the function (1-x)/(1-y) about (x=0; y=0) with x/y argument of the expansion. x and y are definite positive. Any suggestion? Thanks Sandro
21 September 2021 6,455 4 View
Dear colleagues, the problem I am analyzing is a gravity current in viscous-buoyancy balance propagating towards the corner of a fracture that is reducing its width according to b(x)=b_1 x^k,...
01 November 2020 540 0 View
Dear Colleagues, I am looking for a series solution of the velocity in a rectangular cross-section in the presence of a power-law fluid in laminar regime. I found the expression of the average...
21 January 2020 6,658 3 View
Dear Colleagues, I am looking for a Bingham fluid to be used in lab experiments as alternative to Herschel-Bulkley fluids. This last category is well reproduced by Carbopol, which shows a fluid...
06 April 2019 7,299 3 View
Dear Colleagues, I am looking for some lab which is able to prepare transparent hydrogel in blocks, say 100x100x80 mm^3. The composition is the following: acylamide monomer: 8-15%...
16 November 2018 5,680 0 View
Dear All, I am looking for a conductivity probe with a small volume of measurement and a relatively fast response to measure the local value of conductivity of a brine in order to estimate...
09 April 2018 9,971 2 View
Dear Colleagues, we need to prepare mixture of water and salt with mass density > 1.6 g/ml. Lowe et al. JFM 2005 "The non-Boussinesq lock-exchange problem. Part 1. Theory and experiments" used...
11 May 2017 5,191 3 View
We are setting up a three component LDV by TSI, two fiberoptics probes, one with 4 beams (green and blue, shifted and unshifted), the other one with 2 beams (purple shifted and unshifted). The two...
15 November 2016 4,474 7 View
I need to use planar PIV for detecting the instability cells in a Hele-Shaw cell triggered by a gradient of temperature, with a window size of 40x40 mm^2. The fluid in the cell (1 or 2-mm gap) is...
05 February 2016 2,692 18 View
I need to prepare a stable inexpensive liquide to fill up the pores of a porous medium made of transparent glass beads, for PIV measurements. The liquid must be a shear-thinning one. A list of...
24 July 2015 726 2 View
I need to solve in the explicit form the PDE of the depth of the current of fluid moving in a non uniform inclined channel under gravity effect. See the attached file.
26 November 2014 2,571 6 View
I am looking for an analytic solution of the steady uniform flow velocity for a power-law non Newtonian fluid current in a straight channel with triangular cross section, with a free surface. See...
12 September 2013 9,438 2 View
I am looking for publications adopting a modified power law relationship having a monomial structure with a coefficient repesented by a function like an error function or an hyperbolic function....
31 December 2012 8,566 2 View
I am analyzing the sign of the eigenvalues of a singular Sturm-Liouville problem, with the function coefficient of the second order term equal to zero at the edges of the interval. The problem...
11 November 2012 6,164 10 View
Dear Colleagues, I am developing an analytical model for computing the internal wave celerity in a linearly density stratified fluid in a circular cross-section channel, i.e. in a bounded domain....
01 January 1970 3,308 2 View
