Model number


Single Compartment with flow and irreversible conversion of C to D and D to E.


fig 1

This is a one compartment model. F is flow, Cin is inflow concentration, Cout, Dout, and Eout are outflow concentrations, V is volume, Gc2d is the rate at which substance C is converted to substance D, andGd2e is the rate at which substance D is converted to substance E. The reactions are irreversible. C0, D0, and E0 are the initial concentrations of C, D, and E respectively. The amount of material in the compartment is calculated by multiplying the volume by the sum of the concentrations and also by integrating the flow multiplying the difference of what flows in minus what flows out.







Further reading: 


         Ordinary Differential Equations




         Initial Conditions




    The equations for this model may be viewed by running the JSim model applet and clicking on the Source tab at the bottom left of JSim's Run Time graphical user interface. The equations are written in JSim's Mathematical Modeling Language (MML). See the Introduction to MML and the MML Reference Manual. Additional documentation for MML can be found by using the search option at the Physiome home page.

    Download JSim model project file


    Help running a JSim model.

     Jacquez JA. Compartmental Analysis in Biology
     and Medicine. Ann Arbor: University of Michigan Press, 1996.


    Key terms
    one compartment
    single compartment

    Please cite in any publication for which this software is used and send one reprint to the address given below:
    The National Simulation Resource, Director J. B. Bassingthwaighte, Department of Bioengineering, University of Washington, Seattle WA 98195-5061.

    Model development and archiving support at provided by the following grants: NIH U01HL122199 Analyzing the Cardiac Power Grid, 09/15/2015 - 05/31/2020, NIH/NIBIB BE08407 Software Integration, JSim and SBW 6/1/09-5/31/13; NIH/NHLBI T15 HL88516-01 Modeling for Heart, Lung and Blood: From Cell to Organ, 4/1/07-3/31/11; NSF BES-0506477 Adaptive Multi-Scale Model Simulation, 8/15/05-7/31/08; NIH/NHLBI R01 HL073598 Core 3: 3D Imaging and Computer Modeling of the Respiratory Tract, 9/1/04-8/31/09; as well as prior support from NIH/NCRR P41 RR01243 Simulation Resource in Circulatory Mass Transport and Exchange, 12/1/1980-11/30/01 and NIH/NIBIB R01 EB001973 JSim: A Simulation Analysis Platform, 3/1/02-2/28/07.