HydroGeoSphere/Travel Time Probability (Transport)

Output travel time statistics HydroGeoSphere will perform descriptive statistics, following Eqs. (2.154) and (2.155): mean travel time, mode and standard deviation will be calculated at each node/element. • • • Integrate production zone fname Name of the file which contains the list of elements that contain a mass source function and the tabulated functions. It is formatted as follows: (a) nprodel Number of production elements. Read the following nprodel times: i. nel, ifunc The element number and the ID (number) of the associated tabulated function. (b) maxdatprod, delta_conv Size of the largest set of tabulated data which follows and the timestep size delta_conv for evaluating the convolution integral in Equation 5.16. Read the following for each of the ifunc time-series: i. ndata Number of data to read for the current time-series. ii. time, val Time and corresponding source value. If ifunc = 0, then corresponds to a unit and instantaneous mass input function, and thus no time-series are required in the input file. The element nel with the maximum value of ifunc determines how many sets of time-series data must be supplied. This option is meant to simulate a forward transport solution by means of a backward solution. It requires the problem to be backward-in-time. Integration of the backward travel time PDFs will be performed over a series of element numbers, which are input in the .np file. In a forward transport run, these elements would contain a mass source . The following equation is solved at each time-step in order to simulate the output mass flux resulting from a forward transport (see [Cornaton, 2003]): Equation 5.1625(Equation 5.16) if is an arbitrary mass source function [M L−3 T−1], or 25(Equation 5.17) if is a unit and instantaneous mass input function [L−3 T−1]. denotes the domain of elements where . • • •