Examples of Different Design Algorithms

[mitchute]

I've seen (and used) the near_square design algorithm. What others are available? (I'm not seeing docs posted, but I definitely could have missed them) I'm specifically interested in area-constrained situations like you show in the GIF in the README. Where would I get started with something like that?

[j-c-cook]

See the Design directory in examples/. The best area constrained cases that currently have examples are find_bi_rectangle.py and find_bi_zoned_rectangle.py.

An example for the case in the README is going to be added in the next release. Issue 77 is currently open regarding the addition of functionality to handle polygonal outer constraints and no-go drilling zones.

I'd recommend that you look into find_bi_rectangle.py for now. It handles rectangular land constraints.

[NicholasFry]

I just ran the find_bi_rectangle.py script and it works great. I am kind of curious if I am specifying simulation parameters correctly. I understand the length width for the land areas. Why does the borehole length have one value while I specify a max_height and min_height for the PLAT params? What is the difference between the specified borehole length H and the range for the PLAT params?

[j-c-cook]

Good question. The value of the H variable is technically arbitrary. If you set the variable to H = 1 and run the example, you will see that the results are the same. The automated field selection procedure is going to find a field that contains a height closest to and no greater than max_height. The simulations performed to determine the selection are all done at max_height.

See the "call stack" below:

ghedt/ghedt/examples/Design/find_bi_rectangle.py

Lines 146 to 149 in 93d159c

	design_single_u_tube = dt.design.Design(
	V_flow, borehole, single_u_tube, fluid, pipe_single, grout,
	soil, sim_params, geometric_constraints, hourly_extraction_ground_loads,
	flow=flow, routine='bi-rectangle')

ghedt/ghedt/examples/Design/find_bi_rectangle.py

Line 153 in 93d159c

bisection_search = design_single_u_tube.find_design(disp=True)

ghedt/ghedt/design.py

Lines 104 to 110 in 93d159c

	elif self.routine == 'bi-rectangle':
	bisection_search = dt.search_routines.Bisection2D(
	self.coordinates_domain_nested, self.V_flow,
	self.borehole, self.bhe_object, self.fluid, self.pipe,
	self.grout, self.soil, self.sim_params,
	self.hourly_extraction_ground_loads, method=self.method,
	flow=self.flow, disp=disp)

ghedt/ghedt/search_routines.py

Line 256 in 93d159c

self.selection_key, self.selected_coordinates = self.search()

Notice here that the bisection routine utilizes self.sim_params.max_Height for its simulations.

ghedt/ghedt/search_routines.py

Lines 177 to 178 in 93d159c

	c_T_excess = self.calculate_excess(self.coordinates_domain[c_idx],
	self.sim_params.max_Height)

[NicholasFry]

This is awesome. Thank you!