Skip to content

2020 04 15 library development

Michael Wetter edited this page Apr 15, 2020 · 8 revisions

IBPSA Modelica Library Coordination

Date: April 15, 2020, 8am-9am Pacific Times The purpose of this meeting is to coordinate the development https://github.com/ibpsa/modelica-ibpsa

Meeting information

Join from PC, Mac, Linux, iOS or Android: https://lbnl.zoom.us/my/mwetter

Or iPhone one-tap (US Toll): +14086380968,6614042296# or +16465588656,6614042296#

Or Telephone:
Dial: +1 408 638 0968 (US Toll) or +1 646 558 8656 (US Toll) Meeting ID: 661 404 2296 International numbers available: https://lbnl.zoom.us/zoomconference?m=_h5BuJ686mPy3rWEyKf4NROxLaeOV5J8

Agenda

Expert meeting (10 + 5 min presentation)

CONTAM-style models (Klaas)

Refrigerant media (Christian, https://github.com/ibpsa/modelica-ibpsa/issues/1093)

Damper model (Antoine, https://github.com/ibpsa/modelica-ibpsa/issues/1188)

BESTEST weather data validation (Ettore, https://github.com/ibpsa/modelica-ibpsa/issues/1314)

New default for time constant in PartialFlowSensor (Antoine and Michael)

Update on geothermal models (Massimo)

Change to CVode as default solver (Michael)

Visual enhancements of PartialTwoPort (https://github.com/ibpsa/modelica-ibpsa/issues/1280)

Progress on pull requests, https://github.com/ibpsa/modelica-ibpsa/pulls

Participants

Massimo Cimmino
Antoine Gautier
Jianjun Hu
Filip Jorissen
Donghun Kim
Yash Shukla
Christian Vehring
Michael Wetter
Ettore Zanetti

Minutes

Expert meeting topics for 1.1

First overview about IBPSA 1.1 developments, then 1 to 2 minutes each update about the respective library developments (AixLib etc.)

Michael to set up a slide set.

CONTAM-style models (Klaas)

No update.

PR should be in next couple of weeks.

AixLib plans to release detailed vapor compression model.

Filip to review PR for new damper opening signal.

New default for time constant in PartialFlowSensor (Antoine and Michael)

Leave as it is, because if the heater is steady state and there is not state in the sensor, then a P or PI loop will cause an algebraic loop.

BESTEST weather data validation (Ettore, https://github.com/ibpsa/modelica-ibpsa/issues/1314)

Ettore is working on BESTEST, closed to being finished.

Update on geothermal models (Massimo)

Massimo works on modeling of fields that have series connections. Substantial speed up observed in prototype implementation.

Change to CVode as default solver (Michael)

No update.

Visual enhancements of PartialTwoPort (https://github.com/ibpsa/modelica-ibpsa/issues/1280)

No discussions.

No discussions.

Open issues

Flow direction visualization: https://github.com/ibpsa/modelica-ibpsa/pull/1337

Reduced order models with CO2: https://github.com/ibpsa/modelica-ibpsa/issues/1275

Progress on pull requests

All should work on the pull requests or open tickets.

New action items

Michael to share slide draft for expert meeting.

Previous action items

Michael to make homotopyInitialization a constant, and add warning that it is deprecated if homotopy is disabled. In future releases, could remove non-homotopy alltogether.

Christian to work with Massimo on seeing what borefield measurement data Aachen could be providing.

Michael to work on converting models to CVode for Dymola CI testing.

Michael to open ticket to use a scope such as shown in the top graphic of issue https://github.com/ibpsa/modelica-ibpsa/issues/1280

Klaas to make pull request for new air flow models.

Fluid Property models (RWTH) RWTH intern development of R134a, R410A, R32, R407C, R290 and R744 merge in December, Paper in March Are there further fluid models of interest? We can add some more due to master's thesis.

Clone this wiki locally