v10.2.10

What's new in this release

• a Broyden recycle no longer holds back the recycles beside it (#83)
• the Browse buttons of the cross-platform editors open a file dialog (#81)
• hosted Python engines get sys.executable and the standard library (#85)
• the pump takes performance curves measured at several speeds (#82)
• compressor and expander interpolate power and efficiency across speeds
• fluent builder and report for the pump curve sets
• three case-library samples of machines running on their curves
• the three machines read their performance curves in dynamics
• the dynamic pump holds a network instead of running its casing pressure away
• positive displacement pump, in the steady state and in dynamics
• a dynamic event writes its value in the unit the property setter reads
• light ends in the petroleum assay characterization
• check that a compound declared as a light end can be one
• the defined composition of a fluid in the C7+ characterization
• the compound lists the light ends editors offer
• the light ends are picked from a list instead of typed
• the petroleum assays are saved with the simulation outside the Windows interface
• room under the last row of the petroleum characterization windows
• the assistant bridge is only reused when it still answers (#84)
• Gibbs reactor adiabatic mode and first solve; equilibrium reactor adiabatic start
• the Recycle block converges in non-legacy mode and applies its accelerations
• the compressor surge alarm compares the inlet flow against the recorded design flow
• the relief valve feeds its opening curves in percent and passes the API 520 critical flow
• the cooler's dynamic model removes its heat duty from the holdup
• the heater's dynamic model accepts the Heat Added/Removed mode and reports a missing energy stream
• the heater and cooler dynamic models scale the duty by the efficiency
• PSV sizing works in absolute relieving pressure (API 520 P1)
• the FluentAPI stream builder zeroes the compounds a feed never names
• a valve on an empty column drum or sump passes nothing; the shutdown case file carries the design state
• the CSTR dynamic model holds its steady state
• the bioreactor exposes its trajectory charts to the PFD chart object
• the dynamic outlet of a compressor, pump or expander is specified by pressure and enthalpy
• the anaerobic digester exposes its ADM1 trajectory charts to the PFD chart object
• the CFB pyrolysis reactor and the chromatography column expose their curves to the PFD chart object
• dynamic properties set from a script survive a stored flowsheet state
• the crossflow UF and the heat exchanger expose their curves to the PFD chart object
• the CSTR dynamic component conversions stay between 0 and 100 %
• pump, compressor and expander expose their performance curves to the PFD chart object
• the polymerization reactor exposes its molecular weight distribution to the PFD chart object
• the PEM fuel cells expose their output curves to the PFD chart object
• the water electrolyzer exposes a voltage sweep to the PFD chart object
• the product gaps the 8 h course pilot found
• reactor outlets and adiabatic heat input, column feed and specs, exchanger duty bound and profile, adjust stop
• gibbs and conversion reactors detect an empty outlet from the phase fractions and compositions
• reading a property package that cannot be resolved yet no longer breaks loading an object marked calculated (pipe network files)
• typed outlet temperature as the adiabatic estimate; heat duty specs reported as given; Plus units created without a key in the Fluent API
• distillation column initial estimate for purity specs on both products; Robust estimate provider runs
• the empty composition check skips streams with no flow and dynamic runs (an empty holdup stopped the integrator at the first step)
• cause-and-effect matrices saved with the flowsheet; controllers start from the restored valve opening; wizard level loop moves the valve
• dynamics defects from the 20 h dynamic course pilot
• PFR dynamics with section contents loaded from a file
• events at the start of a run act before the first step; PID span field
• Dynamics Wizard level loop tuned from the vessel and the valve; relief valve Kb in subcritical flow
• Avalonia compound properties window opened as modified (Comments row marked it dirty on load)
• PID tuning gives the same gains in the window and in PidTuner
• phase envelope bubble line reaches the critical point
• faster bubble-point flashes in Wang-Henke columns
• PID tuning trials held inside the gain bounds
• SRK compressibility factor from the analytical roots above the covolume (lean-gas envelope threw at cryogenic low pressure)
• Lee-Kesler-Plöcker vapour volume scan starts just above the root
• phase envelope dew line traced to the critical point by saturation-line continuation
• cubic EOS Newton roots (Poly_Roots) polished to a relative step of 1e-12; starts that do not polish into a root are flagged
• PR critical point volume search tolerance relative to the co-volume
• phase envelope main loop, bubble line and cricondenbar near the critical point
• cubic roots precise at very low pressure and at a triple root
• phase envelope start from present compounds, pure-component envelopes, NaN fugacities
• phase envelope dew tail redrawn by the saturation continuation; limits from present compounds
• Boston-Britt, NestedLoops v2 and SimpleLLE Flash_TV pressure seed from compounds with z > 0
• flashes independent of compounds at zero fraction; near-critical bubble/dew points; NL3P PS
• cubic roots with two close small roots and with 0 < disc <= 1e-12 and p > 0
• NestedLoops bubble/dew points: stalled Flash_PV results, relative TV exit, seeded near-critical TV restarts
• SimpleLLE bubble/dew flashes stop on a relative step with a small residual and throw at the iteration or temperature limit
• three-phase flash kept the vapour as a second liquid; stability test order-dependent
• activity-coefficient K-values kept at an azeotrope; column estimates without absent compounds
• cubic roots exact near the triple point (cluster solve, relative discriminant threshold, compensated polish)
• NestedLoops Flash_PV binary-azeotrope exit and activity-coefficient azeotropes; NestedLoops_v2 gets the stalled bubble/dew point fix
• SimpleLLE rejects trivial bubble/dew results, retries from other seeds, throws at the limit for any vapour fraction
• NestedLoops3PV3 PS checked against the PT flash and solved on temperature when the vapour-fraction route stalls
• Boston-Fournier and Gibbs three-phase flashes drop the vapour and liquid copies from the second-liquid candidates; Gibbs no longer writes into the feed; three-phase PH/PS of Boston-Fournier use the two-phase result
• Wang-Henke liquid-free top stage takes the tray below; a failed stage bubble point no longer aborts the column
• Naphtali-Sandholm keeps an azeotropic stage with activity-coefficient packages; its retry starts from a volatility split of the feed
• NestedLoops PT all-liquid shortcut checks the feed bubble condition for activity-coefficient packages
• GibbsMinimization3P converges to the equilibrium split
• NestedLoops3PV3 PT answers checked for missing phases
• Boston-Britt Inside-Out single-phase exits and PV/TV near the trivial solution
• bubble-point column falls back to Naphtali-Sandholm after its last retry
• GibbsMinimization3P restarts from the stability test when vapour and liquid 1 end as one phase
• NestedLoops3PV3 PV/TV three-phase routines use phi_L/phi_V for equation-of-state packages
• NestedLoops dew points checked against the stability of the vapour
• Boston-Britt PV/TV near the critical point, TV retries, single compound
• bubble and dew points held on Wilson K values rejected by a stability test
• volume flashes give one near-critical dense phase one volume
• NestedLoops PV/TV results checked against the model
• NestedLoops Flash_PH_2/PS_2 exit only when the specification is met at V = 0 or 1
• TV bubble and dew points held on Wilson K values rejected by the stability test (Boston-Britt, NestedLoops, NestedLoops_v2)
• NestedLoops_v2 dew points checked against the stability of the vapour (DewPointOnStableBranch)
• phase envelope bubble branch restarts at the lowest stable bubble point connected to the critical point
• dense-phase volume map for pure compounds and mixtures near the critical point
• NestedLoops PT labels near-critical single phases consistently and drops false splits
• vessel keeps the volume-energy flash state when the (P, H) re-flash misses its enthalpy
• NestedLoops_v2 PT labels and false splits, PH_2/PS_2 exit
• stability test suspends the Inspector without overwriting the user's setting
• DW_CalcLnFugCoeff maps a NaN fugacity coefficient to -500 again (UNIQUAC liquid-liquid splits)

System requirements

Desktop application (self-contained, no .NET runtime installation required):

• Windows 10 or later (x64 or ARM64)
• Linux, a recent 64-bit distribution such as Ubuntu 22.04 or later (x64 or ARM64)
• macOS 12 or later (Intel or Apple Silicon)
• 4 GB RAM recommended, about 1 GB of free disk space
• No dedicated GPU required

Headless MCP server (.deb): Debian or Ubuntu (x64 or ARM64), no graphical environment required.

Downloads

File	Platform
DWSIM-10.2.10-arm64.dmg	macOS (Apple Silicon) - disk image
DWSIM-10.2.10-win-arm64-setup.exe	Windows ARM64 - installer
DWSIM-10.2.10-win-x64-setup.exe	Windows x64 - installer
DWSIM-10.2.10-x64.dmg	macOS (Intel) - disk image
dwsim-10.2.10-linux-arm64.tar.gz	Linux ARM64 - portable (tar.gz)
dwsim-10.2.10-linux-x64.tar.gz	Linux x64 - portable (tar.gz)
dwsim-10.2.10-osx-arm64.tar.gz	macOS (Apple Silicon) - portable (tar.gz)
dwsim-10.2.10-osx-x64.tar.gz	macOS (Intel) - portable (tar.gz)
dwsim-10.2.10-win-arm64.zip	Windows ARM64 - portable (zip)
dwsim-10.2.10-win-x64.zip	Windows x64 - portable (zip)
dwsim-mcp_10.2.10_amd64.deb	MCP server (headless) - Linux x64, Debian/Ubuntu
dwsim-mcp_10.2.10_arm64.deb	MCP server (headless) - Linux ARM64, Debian/Ubuntu
dwsim_10.2.10_amd64.deb	Linux x64 - Debian/Ubuntu package
dwsim_10.2.10_arm64.deb	Linux ARM64 - Debian/Ubuntu package

Full Changelog: v10.2.9...v10.2.10