RUcore: Rutgers University Community Repository
Simulation of high tunnel ventilation using computational fluid dynamics
Descriptive
TitleInfo
Title
Simulation of high tunnel ventilation using computational fluid dynamics
Name
(type = personal)
NamePart
(type = family)
Lewus
NamePart
(type = given)
David C.
DisplayForm
David C. Lewus
Role
RoleTerm
(authority = RULIB)
author
Name
(type = personal)
NamePart
(type = family)
Both
NamePart
(type = given)
Arend-Jan
DisplayForm
Arend-Jan Both
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
chair
Name
(type = personal)
NamePart
(type = family)
Oudemans
NamePart
(type = given)
Peter
DisplayForm
Peter Oudemans
Affiliation
Advisory Committee
Role
RoleTerm
(authority = local)
member
Name
(type = personal)
NamePart
(type = family)
Gianfagna
NamePart
(type = given)
Thomas
DisplayForm
Thomas Gianfagna
Affiliation
Advisory Committee
Role
RoleTerm
(authority = local)
member
Name
(type = personal)
NamePart
(type = family)
Bagchi
NamePart
(type = given)
Prosenjit
DisplayForm
Prosenjit Bagchi
Affiliation
Advisory Committee
Role
RoleTerm
(authority = local)
member
Name
(type = corporate)
NamePart
Rutgers University
Role
RoleTerm
(authority = RULIB)
degree grantor
Name
(type = corporate)
NamePart
School of Graduate Studies
Role
RoleTerm
(authority = RULIB)
school
TypeOfResource
Text
Genre
(authority = marcgt)
theses
OriginInfo
DateCreated
(encoding = w3cdtf);
(qualifier = exact);
(keyDate = yes)
2023
DateOther
(encoding = w3cdtf);
(type = degree);
(qualifier = exact)
2023-01
CopyrightDate
(encoding = w3cdtf);
(qualifier = exact)
2023
Language
LanguageTerm
(authority = ISO 639-3:2007);
(type = text)
English
Abstract
(type = abstract)
Freestanding high tunnels are cost-effective, plastic film-covered growing structures that use very little to no modern environmental control technology. Natural ventilation is used to control temperature and humidity. This dissertation investigates design and management decisions that impact the high tunnel environment and ventilation, including vent design, high tunnel orientation, plant canopy height, shoulder-season management, and high tunnel row spacing. The main tool used for this investigation was computational fluid dynamics (CFD) simulations because they can accurately and quickly describe the airflow within a complex system, while allowing for an iterative design process. Field experiments were conducted at the Pennsylvania State University High Tunnel Research and Education Facility (Rock Springs, PA) in order to collect environmental data within and immediately outside of a reference high tunnel. This data was used to validate a CFD model made using commercially available software (ANSYS Fluent), which incorporated the physical processes of energy transfer (convection, conduction, and radiation), turbulence, plant canopy induced drag, plant evapotranspiration, and water vapor transport. The model had a root mean squared error of 1.17 °C (n = 144), showing good agreement between experimental and simulated results since this error is close to the measurement error of the temperature sensors used. Permutations to this base model were made to investigate the research questions posed. These included separate simulations of five roof vent designs, three tunnel orientations, three plant canopy heights, four distinct sets of weather conditions representing the colder periods of the year, and five row spacings for two differently sized tunnels (research size and commercial size). Finally, practical recommendations are presented related to how the findings of this dissertation can be implemented by growers.
Subject
(authority = RUETD)
Topic
Horticulture
Subject
(authority = local)
Topic
Computational fluid dynamics
Subject
(authority = local)
Topic
High tunnels
Subject
(authority = local)
Topic
Simulations
RelatedItem
(type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier
(type = RULIB)
ETD
Identifier
http://dissertations.umi.com/gsnb.rutgers:12326
PhysicalDescription
InternetMediaType
application/pdf
InternetMediaType
text/xml
Extent
206 pages : illustrations
Note
(type = degree)
Ph.D.
Note
(type = bibliography)
Includes bibliographical references
RelatedItem
(type = host)
TitleInfo
Title
School of Graduate Studies Electronic Theses and Dissertations
Identifier
(type = local)
rucore10001600001
Location
PhysicalLocation
(authority = marcorg);
(displayLabel = Rutgers, The State University of New Jersey)
NjNbRU
Identifier
(type = doi)
doi:10.7282/t3-em6j-bn88
Back to the top
Rights
RightsDeclaration
(ID = rulibRdec0006)
The author owns the copyright to this work.
RightsHolder
(type = personal)
Name
FamilyName
Lewus
GivenName
David
Role
Copyright holder
RightsEvent
Type
Permission or license
DateTime
(encoding = w3cdtf);
(qualifier = exact);
(point = start)
2023-02-23T13:18:44
AssociatedEntity
Name
David Lewus
Role
Copyright holder
Affiliation
Rutgers University. School of Graduate Studies
AssociatedObject
Type
License
Name
Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
Back to the top
Technical
RULTechMD
(ID = TECHNICAL1)
ContentModel
ETD
OperatingSystem
(VERSION = 5.1)
windows xp
CreatingApplication
Version
1.7
DateCreated
(point = end);
(encoding = w3cdtf);
(qualifier = exact)
2023-01-02T13:15:39
DateCreated
(point = end);
(encoding = w3cdtf);
(qualifier = exact)
2023-01-02T13:15:39
ApplicationName
Microsoft: Print To PDF
Back to the top
Statistical Profile