Changelog

New in Tunnel 2 (rel. to Tunnel 1.2.1)

Main features

+ Change the solver to 64 bit

+ Parametric run (it was available in Tunnel 1.2 as a separate adds-in)

+ Multi-objective optimization with AutoMOO

+ Graphical script

+ IDA ROAD Tunnel as a substitute for RTV

+ New component (Airwasher)

+ All documents are available in Wiki

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More

+ Local deviation of ambient conditions (climdiff has been added to common library)

+ Ambient temperature gradient (ISO 2533) can be included in local atmospheric pressure calculation versus height

+ Keep logging and start values when reordering objects in tunnel sections

+ Improved 3d memory efficiency

+ Support of macros in reports

+ A new definition for a variable for real velocity (Vrealsub2) considering maximum two trains in sub segment and adding that in path report (Real speed)

+ Added new variable for particle concentration on Train (xPar)

+ New variable for backlayering length

+ train dwell signal for multiple routes

+ A given pressure fan was added

+ Updating the train form with new description and placement for Tbrake and Ttrain

+ Changing the size and the layout of the forms

+ A new form was added to automatic calculation of loss coefficients in area changes

+ PIARC 2019 added to emission table

+ Option for automatic calculation of tauwall was added to Global form

+ Set global hRef when changing location.

+ Set href when setting climate file in that ambient version and Recalculate dtref when switching types.

+ Change in KLoss form

+ Added macros for Graphical Scripting.

+ Leak interface (yellow color) was removed from platform ids and make it general as a portal cut

+ Changing global from

+ Leak interface (yellow color) was removed from hall model ids and make it general as a portal cut

+ Switch to icx/ifx compilers for 64 bit tunnel dll

+ Updating Tunnel Starting Guide

+ Two new samples were added I for DA Tunnel2 (Parametric runs and Graphical scripts)

+ Add a new signal output for TrainDwell vector at Platform

+ Mapping between help index of Tunnel and Wiki documents

+ Updating ID for WIKI

+ Tried truncating trains report to 4letters + rest -> 8 max length for solver.

+ Set output-objects as results.

+ Linked tunnel theoretical reference to wiki.

+ Add Backlayering length to road section form

+ New feature for NFPA 2023 critical velocity of a fire

+ Updating sample1 and sample 2 for rail tunnels in IDA Tunnel2

+ Updating the railsection form by adding the different versions of critical velocity.

+ Add a link to wiki for critical velocity

+ Upgrade filter model in tunnel

+ Reverting new definition of total pressure

+ Changing the name of old total pressure variable to stagnation pressure

+ Resolving the issue for stagnation pressure before the fire.

+ Specify the pos.TAir of the portal based on the neighbouring segment data when the flow exits the portal. This removes jumps in graphs at the portals too

+ Change the name of sample folder of rtv to Road

+ Updating sample1 and Sample_Standing for road tunnels

+ Updating roadsection from with new definitions of critical velocity

+ Updating sample1_Fire for road tunnels

+ Removing setting the value for nr0 from equation and setting that in parameter definition for passage component

+ Updating Rail 3D Tutorial files

+ Uploading modified 3D Tutorials for Road tunnels

+ Interface adjustments for different forms (Road and rail sections, Global, Emission format, Fanduct and Portal)

+ Fixes some mail support problems.

+ Checking to force to have a numerical Jacobin for shiftp function

+ Did some error checks so that we don't crash when empty results in tunnel animations

+ Changes to the license menu

+ Open help in own browser for tunnel (instead of browser component)

Changes in models

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+ Section/Jetfan New definitions for jet fan power varying with tunnel air velocity in background.

+ Damper Added new parameter for loss coefficient of dampers for flow from right to left (kLossR2L)

+ Damper Adding new feature for partially open damper and fully closed damper based on ASHRAE and AMCA

+ Section/Fire Adding the option for automatic calculation of pressure drop through the fire

+ Section/Change area Automatic calculation of loss coef. for area change in tunnel

+ VfGiven This component was modified with a maximum pressure rise setting

+ Damper Kloss is now a vector, An option for if laboratory test data is available, users can set the loss coefficients for partially open dampers.

Fixed bugs

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+ Modified the front and back drag during train entry or exit to or from the tunnel

+ Fixing bug for PHeight calculation in Leak model

+ Fixing bug for Filter cntr variable initialization for old models

+ Fixing Bug 4931-Preventing a minus HRR and critical velocity for the fire

+ Bugs#4929-Crash of IDA Tunnel2 during checking the variables in the outline of AIrIn and AirOut components' forms was resolved.

+ Fixing Bug #5031 for mIce. An error with ICE model when fWet is set equal to zero (that should not be)

+ Fixing Bug #5414 and #5415. cases of Tunnel 1.2 (With VFGiven component) has issue in Tunnel 2-Beta1. The issue has been resolved by setting a higher pressure rise for VFGiven component.

+ Fixing Bugs #4929. Crash of IDA Tunnel2 during checking the variables, duct and TPiece in the outline of AIrIn and AirOut components' forms was resolved.

+ Fixing Bug #4930- Resolving small jump in total(Stagnation) pressure for some cases with a large height difference.

+ Fixing Bug #4143. Air speed in 2D slice graph will be similar to the 3D graph

2025-06-24

EQUA Simulation AB