# pressureDensityCorrector (1d, 2d, 3d)¶

Computes the pressure and density in a nodalArray and modifies the pressure and density if they are below basement values. This is a simple way to prevent pressures and densities from becoming too small but is also non-conservative.

## Data¶

out (string vector)
Output 1 stores the nodalArray that will have its pressure and density corrected. The nodalArray must have the same number of components as is required by the chosen model.

## Parameters¶

model (string)
The model equation used for determining how to compute pressure and density. The model must be a fluid model such as eulerEqn. Will not work with maxwellEqn since no pressure or density is defined. When the model is initialized it will request additional variables required by that model, for example gasGamma and mu0 for MHD type equations.
basementDensity (float)
basementDensity used in determining when to switch between accurate and positive solutions. Default is 0.0.
basementPressure (float)
basementPressure used in determining when to switch between accurate and positive solutions. Default is 0.0.

## Example¶

<Updater correct>
kind = pressureDensityCorrector2d
model = eulerEqn
basementDensity = BASEMENT_DENSITY
basementPressure = BASEMENT_PRESSURE
gasGamma = GAS_GAMMA
onGrid = domain
out = [q]
</Updater>