Need some guidance -- Graphing in Matlab Hello, I am doing a project using Matlab. I need to generate this graph as shown in the attachment. For the gas and liquid superficial velocity, I am able to find the equation but as for the Flow pattern transition boundary equation(the darker lines), I am stuck. I have referred to Noghrehkar's journal and Ulbricht as well. Right now I am clueless of where else to look for the equation. I need to plot a flow map for a staggered bundle, cross flow shell and tube heat exchanger with vertical upright orientation.