Wrong sign in documentation of p_rgh
In the documentation of the "p_rgh" the sign is wrong in some of the equations. All terms in the equations below the sentence "After the following substititions" should be negative in https://www.openfoam.com/documentation/cpp-guide/html/guide-applications-solvers-variable-transform-p-rgh.html
In the second to last equation, the last term ghgrad(rho) should be negative too. Compare for example with this: https://develop.openfoam.com/Development/OpenFOAM-plus/blob/master/applications/solvers/heatTransfer/buoyantSimpleFoam/UEqn.H#L28