TMVOC Category

Problem in Defining the Water Table

Hi everyone, I would like to know how to define the water table if I want it to be sloped or fluctuating? I really dont have any idea where this problem is coming from. Any help is appreciated.…

Problem in 3D LNAPL spillage modelling with TMVOC

Hi friends, I am simulating problem r2dl in the TMVOC Manual but in a 3D geometry with the domain size of 220m*120m*20m(depth) with the discretization of 51*51*51 nodes.…

Running 2 NGCs

Hi Everyone, I'm new at using TMVOC. I'm trying to run 2 NCGs (Air and CO2). It's a simple model. Just a model of atmosphere (gas only - with NCGs air and CO2) and soil (water only).…

SAVE as INCON: big issue

Hi everyone, There is an issue with the initialisation of the components in place in my output file. The attached file "save_file_run_1" (screenshot from the output file) shows the volume and mass…

Well modeling

Hi everyone, I use TMVOC to model remediation of soils and groundwaters. I first need to model pumping tests and I was wondering how could I precisely model wells and observation wells.…

Mass out problem of Sources/Sinks about drawdown

Hi everyone : I am trying to pump water and create drawdown in TMVOC I have a question about the pump water. My pump water point is below free water level 1m and want to create 1m drawdown.…

Debugging

Hello I am running a problem and the simulation was halted at the middle of simulation. Here is the text that I found in the output file. How can I figure out and fix the problem?…

Oxidation extension

Hi all What are the possible ways to add oxidation extension to TMVOC? Is there any available code like TMVOCbio? Thank you

Atmosphere boundary thickness

Hi all I am trying to quantify gas emissions into the atmosphere. But the gas diffusion is highly dependant on atmospheric thickness, isn't it? Whats the most reasonable value for this? Stefan,…

MGTAB

Hi I am trying to run a domain containing numerous generation sources (>1000). I have faced an error about the number of generation sources. I searched for "MGTAB" in source codes and I found in…

MINC

Hi For modeling the topsoil cracks using MINC, what should be the number of continua? I think that two is fine, but is it? How can I apply the fracture to a certain number of cells?…

Capillary Pressure Definition

In TMVOC, is the capillary pressure between two phases i and j: Pc_ij = Pi - Pj or Pc_ij = Pj - Pi ? where Pi and Pj are the pressures in the phases i and j. Thank you in advance, Quentin

VOL. GENER TYPE

Hi everyone, Wandering in the t2f.f file, I found that there is a GENER type not referenced in the TMVOC manual : "VOL." I assume it allows specifying an injection or pumping volumetric rate.…

How can I stop water movement in TMVOC?

How can I stop water movement in TMVOC? I was told to put the residual water saturation of the material, which I think is CP(2), equals water saturation of cells.…

Running sample problem 7

On page 109 of the User's Guide, it is mentioned that 'Small changes were made in subroutine GXYZ of the MESHMAKER module meshm.f to obtain the domain assignments' but the changes themselves have…

TMVOC-MP

Hi, has anyone run TMVOC module with Tough2-MP successfully? Our current project has big area and needs fine mesh in pay zone, plus the MINC natural fractures,…

Dirichlet boundary

Hi all I am trying to make a boundary with pressure variations. I have two questions: 1- Should I just follow the equation 27 in TOUGH2 manual (ideal gas law)?…

"Default porosity" definition

Hi everyone, Just a quick post to ask a simple question: is the "default porosity" POR in ROCKS the total porosity? For instance, total porosity for clay formations is, in general, about 40-50%.…

Viscosity of a pure VOC - Error in the formula

Hi everyone, A quick post just for you to note that the formula (4.3.12) in the TMVOC user's manual is not correct. It should be written : ln(µ) = A + B/T + C*T + D*T*T instead of ln(µ) = A - B/T +…

Axis rotation

Hi everyone. I want to rotate my axis from y to z. Now I have an input file where my domain is in x-y (constant width as z direction), but gravity is in z direction.…

TEXPOM - exponent for calculation of chemical diffusivity

Hi everyone, I am currently adding properties of the chemical Hexachlorobutadiene into the CHEMP block. There is the TEXPOM data missing as I do not know where to find the definition in the TMVOC…

Mole fraction in each phase

I am confused with term mole fraction in TMVOC output file. I think the total of mole fractions in each phase in one element should equal to 1. But, many output sample in TMVOC manual doesn't show…

Steam injection about TMVOC

Hi everyone : I am trying to model the steam injection remediation I have a question about the steam injection rate. My inject point is 5.5m below free water level When I use “0.…

CHEMP.5 Record for new chemicals

Hi everyone, I am trying to add new chemicals in the CHEMP block but I have some difficulties with the CHEMP.5 record, i.e. about the ideal gas heat capacity constants.…

Partitioning Tracer Test Modeling with TMVOC

Hi everyone, I was wondering how could I manage to model Partitioning Interwell Tracer Tests (PITT) with TMVOC. The main difficulty I am confronted by is the data of the partitioning and…