User:Rshrikanth - Revision history

Rshrikanth at 12:00, 4 April 2011

2011-04-04T12:00:00Z

← Older revision		Revision as of 12:00, 4 April 2011
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	Mentor : [[Krishnan Chittur]]		Mentor : [[Krishnan Chittur]]

	~~Code: {{srcbranch\|shrikanth\|models/johnpye/fprops}}~~

	==Goals==		==Goals==
	ASCEND's thermophysical property database is presently available in files written using ASCEND syntax. This data is open and new data can added without any requirement of recompilation.But browsing data in difficult in this form. This Project aims at migrating present database in .a4l file to *.db format. SQLite can be employed for this database migration. Also it would be necessary to have certain interface to load database from an ASCEND model. After successful migration, tests are needed to formulated and carried out to make sure that the property formulations worked as expected.		ASCEND's thermophysical property database is presently available in files written using ASCEND syntax. This data is open and new data can added without any requirement of recompilation.But browsing data in difficult in this form. This Project aims at migrating present database in .a4l file to *.db format. SQLite can be employed for this database migration. Also it would be necessary to have certain interface to load database from an ASCEND model. After successful migration, tests are needed to formulated and carried out to make sure that the property formulations worked as expected.

	==~~Progress made~~==		==Work done==
	~~'''Thermophysical Database'''~~
	Added 9 components into FPROPS database.		Added 9 components into FPROPS database.

	~~'''~~Patch for gibbs free energy in helmholtz function~~'''~~		Patch for gibbs free energy in helmholtz function

	~~'''ADDED~~ RADAU5 ~~integrator'''~~		==Present work==
			====RADAU5====
			Introduction

			Radau5 codes are based on runge kutta implicit methods. The present native integrators LSODE and IDA are based on backward difference formula(BDF) where as newly added DOPRI5 and RADAU5 are based on single step methods of runge kutta are simply called march forward methods as they don't depend on previous values of y. RADAU5 codes are capable of integrating ''stiff ordinary differential equations'' and ''differential algebraic equations'' and there general accuracy of order 5. For further reading please refer ''Solving ordinary differential equations part 2 by E.Hairer and G.Wanner'' where solving procedure as well code are discussed.

			===work done===

			Primary wrapper for integrator is finished and is available in trunk version.

			Integrator performance against van der pol problem (stiff ode) has been satisfactorily tested.

			===Further work===

			More rigorous testing required to be performed.

			Present wrapper supports solving ODE's. Although DAE's can also be solved but approach doesn't make use of native ability of RADAU5 and order of accuracy would be smaller. Extending wrapper support to make use RADAU5's DAE solving ability is in proposed further work.

	==Codes==		==Codes==
	HDPE reactor model		HDPE reactor model

	http://ascendcode.cheme.cmu.edu/viewvc/code/branches/shrikanth/models/kchittur/shrikanth/HDPE.a4c?revision=3176&view=markup		http://ascendcode.cheme.cmu.edu/viewvc/code/branches/shrikanth/models/kchittur/shrikanth/HDPE.a4c?revision=3176&view=markup

Rshrikanth at 08:18, 29 March 2011

2011-03-29T08:18:15Z

← Older revision		Revision as of 08:18, 29 March 2011
Line 7:		Line 7:
	Code: {{srcbranch\|shrikanth\|models/johnpye/fprops}}		Code: {{srcbranch\|shrikanth\|models/johnpye/fprops}}

	== ~~Project description~~ ==		==Goals==
	ASCEND's thermophysical property database is presently available in files written using ASCEND syntax. This data is open and new data can added without any requirement of recompilation.But browsing data in difficult in this form. This Project aims at migrating present database in .a4l file to *.db format. SQLite can be employed for this database migration. Also it would be necessary to have certain interface to load database from an ASCEND model. After successful migration, tests are needed to formulated and carried out to make sure that the property formulations worked as expected.		ASCEND's thermophysical property database is presently available in files written using ASCEND syntax. This data is open and new data can added without any requirement of recompilation.But browsing data in difficult in this form. This Project aims at migrating present database in .a4l file to *.db format. SQLite can be employed for this database migration. Also it would be necessary to have certain interface to load database from an ASCEND model. After successful migration, tests are needed to formulated and carried out to make sure that the property formulations worked as expected.

	==~~Deliverables~~==		==Progress made==
			'''Thermophysical Database'''
			Added 9 components into FPROPS database.

			'''Patch for gibbs free energy in helmholtz function'''

			'''ADDED RADAU5 integrator'''

	==Codes==		==Codes==

Rshrikanth: /* Tasks/Deliverables */

2011-03-29T08:12:26Z

Tasks/Deliverables

← Older revision		Revision as of 08:12, 29 March 2011
Line 10:		Line 10:
	ASCEND's thermophysical property database is presently available in files written using ASCEND syntax. This data is open and new data can added without any requirement of recompilation.But browsing data in difficult in this form. This Project aims at migrating present database in .a4l file to *.db format. SQLite can be employed for this database migration. Also it would be necessary to have certain interface to load database from an ASCEND model. After successful migration, tests are needed to formulated and carried out to make sure that the property formulations worked as expected.		ASCEND's thermophysical property database is presently available in files written using ASCEND syntax. This data is open and new data can added without any requirement of recompilation.But browsing data in difficult in this form. This Project aims at migrating present database in .a4l file to *.db format. SQLite can be employed for this database migration. Also it would be necessary to have certain interface to load database from an ASCEND model. After successful migration, tests are needed to formulated and carried out to make sure that the property formulations worked as expected.

	==~~Tasks/~~Deliverables==		==Deliverables==

	~~1)As of now to equate fugacities of liquid phase and gas phase for saturation boundaries.~~

	~~2)Migrating database will be done in later phase~~

	==Codes==		==Codes==

Rshrikanth: /* Codes */

2011-01-31T12:24:12Z

Codes

← Older revision		Revision as of 12:24, 31 January 2011
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	==Codes==		==Codes==
			HDPE reactor model
			http://ascendcode.cheme.cmu.edu/viewvc/code/branches/shrikanth/models/kchittur/shrikanth/HDPE.a4c?revision=3176&view=markup

			PYTHON script for integrating above model
	http://ascendcode.cheme.cmu.edu/viewvc/code/branches/shrikanth/models/kchittur/shrikanth/HDPE_integrate_ida_ctrl.py?view=markup		http://ascendcode.cheme.cmu.edu/viewvc/code/branches/shrikanth/models/kchittur/shrikanth/HDPE_integrate_ida_ctrl.py?view=markup

	[[Category:GSOC2010]]		[[Category:GSOC2010]]

Rshrikanth at 12:22, 31 January 2011

2011-01-31T12:22:38Z

← Older revision		Revision as of 12:22, 31 January 2011
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	2)Migrating database will be done in later phase		2)Migrating database will be done in later phase

	==~~Detailed Plan~~==		==Codes==
	~~==work done ==~~		http://ascendcode.cheme.cmu.edu/viewvc/code/branches/shrikanth/models/kchittur/shrikanth/HDPE_integrate_ida_ctrl.py?view=markup
	~~===Week 1===~~

	~~1)Added 15 components (ref~~. ~~Lemmon's Short fundamental Equations of state for 20 industrial fluids) to FPROPS database (workdone along with Ankit)~~

	~~2)Tested~~ code ~~with test data for single point provided in Lemmon at~~.el


	~~===Week 2==~~=

	~~1)Added test data to Sulfur dioxide from NIST web book and perry's correlation for ideal gas heat capacity. Results were acceptable to tolerances set in Lemmon's paper~~


	[[Category:GSOC2010]]		[[Category:GSOC2010]]

Jpye at 01:40, 30 July 2010

2010-07-30T01:40:48Z

← Older revision		Revision as of 01:40, 30 July 2010
Line 4:		Line 4:

	Mentor : [[Krishnan Chittur]]		Mentor : [[Krishnan Chittur]]

			Code: {{srcbranch\|shrikanth\|models/johnpye/fprops}}

	== Project description ==		== Project description ==

Rshrikanth: /* work done */

2010-06-06T12:34:47Z

work done

@@ Line 16: / Line 16: @@
 ==Detailed Plan==
 ==work done ==
 [[Category:GSOC2010]]

Rshrikanth at 11:08, 6 June 2010

2010-06-06T11:08:59Z

← Older revision		Revision as of 11:08, 6 June 2010
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	==Detailed Plan==		==Detailed Plan==
			==work done ==
	[[Category:GSOC2010]]		[[Category:GSOC2010]]

Rshrikanth: /* Tasks/Deliverables */

2010-06-06T11:08:27Z

Tasks/Deliverables

← Older revision		Revision as of 11:08, 6 June 2010
Line 9:		Line 9:

	==Tasks/Deliverables==		==Tasks/Deliverables==

	1)As of now to equate fugacities of liquid phase and gas phase for saturation boundaries.		1)As of now to equate fugacities of liquid phase and gas phase for saturation boundaries.

	2)Migrating database will be done in later phase		2)Migrating database will be done in later phase

Rshrikanth: /* Tasks/Deliverables */

2010-06-06T11:07:32Z

Tasks/Deliverables

← Older revision		Revision as of 11:07, 6 June 2010
Line 9:		Line 9:

	==Tasks/Deliverables==		==Tasks/Deliverables==
	As of now to equate fugacities of liquid phase and gas phase for saturation boundaries.		1)As of now to equate fugacities of liquid phase and gas phase for saturation boundaries.
	Migrating database will be done in later phase		2)Migrating database will be done in later phase

	==Detailed Plan==		==Detailed Plan==

	[[Category:GSOC2010]]		[[Category:GSOC2010]]